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Finding the Fourth Proportional to 81,332.65, 112,239.03 and 45,522.65

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Solution

The fourth proportional to 81,332.65, 112,239.03 and 45,522.65 is: 62,821.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,332.65 : 112,239.03 = 45,522.65 : x
  2. Step 2: Convert to fraction form
    81,332.65/112,239.03 = 45,522.65/x
  3. Step 3: Cross multiply
    81,332.65x = 112,239.03 × 45,522.65
  4. Step 4: Simplify right side
    81,332.65x = 5,109,418,530.34
  5. Step 5: Solve for x
    x = 5,109,418,530.34/81,332.65
  6. Step 6: Final answer
    x = 62,821.25

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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.