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Finding the Fourth Proportional to 90,042, 124,257.96 and 50,298

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Solution

The fourth proportional to 90,042, 124,257.96 and 50,298 is: 69,411.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,042 : 124,257.96 = 50,298 : x
  2. Step 2: Convert to fraction form
    90,042/124,257.96 = 50,298/x
  3. Step 3: Cross multiply
    90,042x = 124,257.96 × 50,298
  4. Step 4: Simplify right side
    90,042x = 6,249,926,872.08
  5. Step 5: Solve for x
    x = 6,249,926,872.08/90,042
  6. Step 6: Final answer
    x = 69,411.24

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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.