Home / 78,022,892.80-117,034,728-31,989,905.92

Finding the Fourth Proportional to 78,022,892.80, 117,034,728 and 31,989,905.92

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Solution

The fourth proportional to 78,022,892.80, 117,034,728 and 31,989,905.92 is: 47,985,018.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,022,892.80 : 117,034,728 = 31,989,905.92 : x
  2. Step 2: Convert to fraction form
    78,022,892.80/117,034,728 = 31,989,905.92/x
  3. Step 3: Cross multiply
    78,022,892.80x = 117,034,728 × 31,989,905.92
  4. Step 4: Simplify right side
    78,022,892.80x = 3,743,929,938,092,790
  5. Step 5: Solve for x
    x = 3,743,929,938,092,790/78,022,892.80
  6. Step 6: Final answer
    x = 47,985,018.29

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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.