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Finding the Fourth Proportional to 81,503.52, 112,480.28 and 45,695.85

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Solution

The fourth proportional to 81,503.52, 112,480.28 and 45,695.85 is: 63,063.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,503.52 : 112,480.28 = 45,695.85 : x
  2. Step 2: Convert to fraction form
    81,503.52/112,480.28 = 45,695.85/x
  3. Step 3: Cross multiply
    81,503.52x = 112,480.28 × 45,695.85
  4. Step 4: Simplify right side
    81,503.52x = 5,139,881,774.36
  5. Step 5: Solve for x
    x = 5,139,881,774.36/81,503.52
  6. Step 6: Final answer
    x = 63,063.31

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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.