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Finding the Fourth Proportional to 74,502.47, 102,813.53 and 40,510.92

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Solution

The fourth proportional to 74,502.47, 102,813.53 and 40,510.92 is: 55,905.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,502.47 : 102,813.53 = 40,510.92 : x
  2. Step 2: Convert to fraction form
    74,502.47/102,813.53 = 40,510.92/x
  3. Step 3: Cross multiply
    74,502.47x = 102,813.53 × 40,510.92
  4. Step 4: Simplify right side
    74,502.47x = 4,165,070,486.19
  5. Step 5: Solve for x
    x = 4,165,070,486.19/74,502.47
  6. Step 6: Final answer
    x = 55,905.14

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1.5x scale

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.