Home / 85,591,995,123.69-128,276,306,622.45-47,817,044,619.39

Finding the Fourth Proportional to 85,591,995,123.69, 128,276,306,622.45 and 47,817,044,619.39

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Solution

The fourth proportional to 85,591,995,123.69, 128,276,306,622.45 and 47,817,044,619.39 is: 71,663,172,105.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,591,995,123.69 : 128,276,306,622.45 = 47,817,044,619.39 : x
  2. Step 2: Convert to fraction form
    85,591,995,123.69/128,276,306,622.45 = 47,817,044,619.39/x
  3. Step 3: Cross multiply
    85,591,995,123.69x = 128,276,306,622.45 × 47,817,044,619.39
  4. Step 4: Simplify right side
    85,591,995,123.69x = 6,133,793,877,375,988,006,912
  5. Step 5: Solve for x
    x = 6,133,793,877,375,988,006,912/85,591,995,123.69
  6. Step 6: Final answer
    x = 71,663,172,105.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.