Home / 72,220,141.77-99,663,988.82-39,180,390.90

Finding the Fourth Proportional to 72,220,141.77, 99,663,988.82 and 39,180,390.90

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Solution

The fourth proportional to 72,220,141.77, 99,663,988.82 and 39,180,390.90 is: 54,069,044.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220,141.77 : 99,663,988.82 = 39,180,390.90 : x
  2. Step 2: Convert to fraction form
    72,220,141.77/99,663,988.82 = 39,180,390.90/x
  3. Step 3: Cross multiply
    72,220,141.77x = 99,663,988.82 × 39,180,390.90
  4. Step 4: Simplify right side
    72,220,141.77x = 3,904,874,040,620,829.50
  5. Step 5: Solve for x
    x = 3,904,874,040,620,829.50/72,220,141.77
  6. Step 6: Final answer
    x = 54,069,044.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.