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Finding the Fourth Proportional to 59,761,978.80, 89,642,968.20 and 54,660,145.20

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Solution

The fourth proportional to 59,761,978.80, 89,642,968.20 and 54,660,145.20 is: 81,990,217.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,761,978.80 : 89,642,968.20 = 54,660,145.20 : x
  2. Step 2: Convert to fraction form
    59,761,978.80/89,642,968.20 = 54,660,145.20/x
  3. Step 3: Cross multiply
    59,761,978.80x = 89,642,968.20 × 54,660,145.20
  4. Step 4: Simplify right side
    59,761,978.80x = 4,899,897,657,970,983
  5. Step 5: Solve for x
    x = 4,899,897,657,970,983/59,761,978.80
  6. Step 6: Final answer
    x = 81,990,217.80

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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.