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Finding the Fourth Proportional to 74,710.52, 103,097.88 and 40,718.34

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Solution

The fourth proportional to 74,710.52, 103,097.88 and 40,718.34 is: 56,189.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,710.52 : 103,097.88 = 40,718.34 : x
  2. Step 2: Convert to fraction form
    74,710.52/103,097.88 = 40,718.34/x
  3. Step 3: Cross multiply
    74,710.52x = 103,097.88 × 40,718.34
  4. Step 4: Simplify right side
    74,710.52x = 4,197,974,531.12
  5. Step 5: Solve for x
    x = 4,197,974,531.12/74,710.52
  6. Step 6: Final answer
    x = 56,189.87

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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.