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Finding the Fourth Proportional to 74,386.55, 102,602.50 and 47,517.13

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Solution

The fourth proportional to 74,386.55, 102,602.50 and 47,517.13 is: 65,541.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,386.55 : 102,602.50 = 47,517.13 : x
  2. Step 2: Convert to fraction form
    74,386.55/102,602.50 = 47,517.13/x
  3. Step 3: Cross multiply
    74,386.55x = 102,602.50 × 47,517.13
  4. Step 4: Simplify right side
    74,386.55x = 4,875,376,340.29
  5. Step 5: Solve for x
    x = 4,875,376,340.29/74,386.55
  6. Step 6: Final answer
    x = 65,541.10

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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.