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Finding the Fourth Proportional to 90,073.18, 124,308.66 and 52,345

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Solution

The fourth proportional to 90,073.18, 124,308.66 and 52,345 is: 72,240.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,073.18 : 124,308.66 = 52,345 : x
  2. Step 2: Convert to fraction form
    90,073.18/124,308.66 = 52,345/x
  3. Step 3: Cross multiply
    90,073.18x = 124,308.66 × 52,345
  4. Step 4: Simplify right side
    90,073.18x = 6,506,936,807.70
  5. Step 5: Solve for x
    x = 6,506,936,807.70/90,073.18
  6. Step 6: Final answer
    x = 72,240.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.