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Finding the Fourth Proportional to 81,503.85, 112,475.72 and 47,535.89

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Solution

The fourth proportional to 81,503.85, 112,475.72 and 47,535.89 is: 65,599.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,503.85 : 112,475.72 = 47,535.89 : x
  2. Step 2: Convert to fraction form
    81,503.85/112,475.72 = 47,535.89/x
  3. Step 3: Cross multiply
    81,503.85x = 112,475.72 × 47,535.89
  4. Step 4: Simplify right side
    81,503.85x = 5,346,633,215.91
  5. Step 5: Solve for x
    x = 5,346,633,215.91/81,503.85
  6. Step 6: Final answer
    x = 65,599.76

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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.