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Finding the Fourth Proportional to 81,885.87, 113,000.90 and 45,586.83

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Solution

The fourth proportional to 81,885.87, 113,000.90 and 45,586.83 is: 62,908.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,885.87 : 113,000.90 = 45,586.83 : x
  2. Step 2: Convert to fraction form
    81,885.87/113,000.90 = 45,586.83/x
  3. Step 3: Cross multiply
    81,885.87x = 113,000.90 × 45,586.83
  4. Step 4: Simplify right side
    81,885.87x = 5,151,352,590.21
  5. Step 5: Solve for x
    x = 5,151,352,590.21/81,885.87
  6. Step 6: Final answer
    x = 62,908.93

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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.