Home / 72,731,116.12-100,371,350.46-39,693,173.08

Finding the Fourth Proportional to 72,731,116.12, 100,371,350.46 and 39,693,173.08

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Solution

The fourth proportional to 72,731,116.12, 100,371,350.46 and 39,693,173.08 is: 54,777,894.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,731,116.12 : 100,371,350.46 = 39,693,173.08 : x
  2. Step 2: Convert to fraction form
    72,731,116.12/100,371,350.46 = 39,693,173.08/x
  3. Step 3: Cross multiply
    72,731,116.12x = 100,371,350.46 × 39,693,173.08
  4. Step 4: Simplify right side
    72,731,116.12x = 3,984,057,386,082,117
  5. Step 5: Solve for x
    x = 3,984,057,386,082,117/72,731,116.12
  6. Step 6: Final answer
    x = 54,777,894.23

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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.