Home / 78,144,309.53-117,227,243.28-45,370,313.21

Finding the Fourth Proportional to 78,144,309.53, 117,227,243.28 and 45,370,313.21

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Solution

The fourth proportional to 78,144,309.53, 117,227,243.28 and 45,370,313.21 is: 68,061,728.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,144,309.53 : 117,227,243.28 = 45,370,313.21 : x
  2. Step 2: Convert to fraction form
    78,144,309.53/117,227,243.28 = 45,370,313.21/x
  3. Step 3: Cross multiply
    78,144,309.53x = 117,227,243.28 × 45,370,313.21
  4. Step 4: Simplify right side
    78,144,309.53x = 5,318,636,744,358,468
  5. Step 5: Solve for x
    x = 5,318,636,744,358,468/78,144,309.53
  6. Step 6: Final answer
    x = 68,061,728.06

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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.