Home / 72,220,140.76-99,663,987.43-39,180,389.89

Finding the Fourth Proportional to 72,220,140.76, 99,663,987.43 and 39,180,389.89

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Solution

The fourth proportional to 72,220,140.76, 99,663,987.43 and 39,180,389.89 is: 54,069,042.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,220,140.76 : 99,663,987.43 = 39,180,389.89 : x
  2. Step 2: Convert to fraction form
    72,220,140.76/99,663,987.43 = 39,180,389.89/x
  3. Step 3: Cross multiply
    72,220,140.76x = 99,663,987.43 × 39,180,389.89
  4. Step 4: Simplify right side
    72,220,140.76x = 3,904,873,885,499,459.50
  5. Step 5: Solve for x
    x = 3,904,873,885,499,459.50/72,220,140.76
  6. Step 6: Final answer
    x = 54,069,042.85

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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.