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Finding the Fourth Proportional to 112,727, 155,574.60 and 62,426

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Solution

The fourth proportional to 112,727, 155,574.60 and 62,426 is: 86,154.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,727 : 155,574.60 = 62,426 : x
  2. Step 2: Convert to fraction form
    112,727/155,574.60 = 62,426/x
  3. Step 3: Cross multiply
    112,727x = 155,574.60 × 62,426
  4. Step 4: Simplify right side
    112,727x = 9,711,899,979.60
  5. Step 5: Solve for x
    x = 9,711,899,979.60/112,727
  6. Step 6: Final answer
    x = 86,154.16

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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.