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Finding the Fourth Proportional to 81,448.74, 112,397.22 and 45,640.26

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Solution

The fourth proportional to 81,448.74, 112,397.22 and 45,640.26 is: 62,982.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,448.74 : 112,397.22 = 45,640.26 : x
  2. Step 2: Convert to fraction form
    81,448.74/112,397.22 = 45,640.26/x
  3. Step 3: Cross multiply
    81,448.74x = 112,397.22 × 45,640.26
  4. Step 4: Simplify right side
    81,448.74x = 5,129,838,344.08
  5. Step 5: Solve for x
    x = 5,129,838,344.08/81,448.74
  6. Step 6: Final answer
    x = 62,982.42

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1.5x scale

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.