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Finding the Fourth Proportional to 78,153.04, 107,849.71 and 43,697.62

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Solution

The fourth proportional to 78,153.04, 107,849.71 and 43,697.62 is: 60,301.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,153.04 : 107,849.71 = 43,697.62 : x
  2. Step 2: Convert to fraction form
    78,153.04/107,849.71 = 43,697.62/x
  3. Step 3: Cross multiply
    78,153.04x = 107,849.71 × 43,697.62
  4. Step 4: Simplify right side
    78,153.04x = 4,712,775,265.82
  5. Step 5: Solve for x
    x = 4,712,775,265.82/78,153.04
  6. Step 6: Final answer
    x = 60,301.88

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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.