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Finding the Fourth Proportional to 72,113.78, 108,094.08 and 42,545.54

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Solution

The fourth proportional to 72,113.78, 108,094.08 and 42,545.54 is: 63,773.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,113.78 : 108,094.08 = 42,545.54 : x
  2. Step 2: Convert to fraction form
    72,113.78/108,094.08 = 42,545.54/x
  3. Step 3: Cross multiply
    72,113.78x = 108,094.08 × 42,545.54
  4. Step 4: Simplify right side
    72,113.78x = 4,598,921,004.40
  5. Step 5: Solve for x
    x = 4,598,921,004.40/72,113.78
  6. Step 6: Final answer
    x = 63,773.12

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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.