Home / 85,591,995,135.72-128,276,306,640.40-47,817,044,631.44

Finding the Fourth Proportional to 85,591,995,135.72, 128,276,306,640.40 and 47,817,044,631.44

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Solution

The fourth proportional to 85,591,995,135.72, 128,276,306,640.40 and 47,817,044,631.44 is: 71,663,172,123.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,591,995,135.72 : 128,276,306,640.40 = 47,817,044,631.44 : x
  2. Step 2: Convert to fraction form
    85,591,995,135.72/128,276,306,640.40 = 47,817,044,631.44/x
  3. Step 3: Cross multiply
    85,591,995,135.72x = 128,276,306,640.40 × 47,817,044,631.44
  4. Step 4: Simplify right side
    85,591,995,135.72x = 6,133,793,879,780,289,937,408
  5. Step 5: Solve for x
    x = 6,133,793,879,780,289,937,408/85,591,995,135.72
  6. Step 6: Final answer
    x = 71,663,172,123.21

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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.