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Finding the Fourth Proportional to 72,510.60, 108,845.38 and 57,613.48

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Solution

The fourth proportional to 72,510.60, 108,845.38 and 57,613.48 is: 86,483.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,510.60 : 108,845.38 = 57,613.48 : x
  2. Step 2: Convert to fraction form
    72,510.60/108,845.38 = 57,613.48/x
  3. Step 3: Cross multiply
    72,510.60x = 108,845.38 × 57,613.48
  4. Step 4: Simplify right side
    72,510.60x = 6,270,961,123.72
  5. Step 5: Solve for x
    x = 6,270,961,123.72/72,510.60
  6. Step 6: Final answer
    x = 86,483.37

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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.