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Finding the Fourth Proportional to 81,392.40, 112,318.88 and 45,092.34

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Solution

The fourth proportional to 81,392.40, 112,318.88 and 45,092.34 is: 62,225.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,392.40 : 112,318.88 = 45,092.34 : x
  2. Step 2: Convert to fraction form
    81,392.40/112,318.88 = 45,092.34/x
  3. Step 3: Cross multiply
    81,392.40x = 112,318.88 × 45,092.34
  4. Step 4: Simplify right side
    81,392.40x = 5,064,721,125.38
  5. Step 5: Solve for x
    x = 5,064,721,125.38/81,392.40
  6. Step 6: Final answer
    x = 62,225.97

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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.