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Finding the Fourth Proportional to 81,294.77, 112,192.29 and 45,488.12

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Solution

The fourth proportional to 81,294.77, 112,192.29 and 45,488.12 is: 62,776.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,294.77 : 112,192.29 = 45,488.12 : x
  2. Step 2: Convert to fraction form
    81,294.77/112,192.29 = 45,488.12/x
  3. Step 3: Cross multiply
    81,294.77x = 112,192.29 × 45,488.12
  4. Step 4: Simplify right side
    81,294.77x = 5,103,415,789.63
  5. Step 5: Solve for x
    x = 5,103,415,789.63/81,294.77
  6. Step 6: Final answer
    x = 62,776.68

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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.