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Finding the Fourth Proportional to 72,592.47, 100,160.08 and 42,360.53

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Solution

The fourth proportional to 72,592.47, 100,160.08 and 42,360.53 is: 58,447.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,592.47 : 100,160.08 = 42,360.53 : x
  2. Step 2: Convert to fraction form
    72,592.47/100,160.08 = 42,360.53/x
  3. Step 3: Cross multiply
    72,592.47x = 100,160.08 × 42,360.53
  4. Step 4: Simplify right side
    72,592.47x = 4,242,834,218.14
  5. Step 5: Solve for x
    x = 4,242,834,218.14/72,592.47
  6. Step 6: Final answer
    x = 58,447.30

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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.