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Finding the Fourth Proportional to 66,081.52, 99,220.70 and 26,715.52

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Solution

The fourth proportional to 66,081.52, 99,220.70 and 26,715.52 is: 40,113.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,081.52 : 99,220.70 = 26,715.52 : x
  2. Step 2: Convert to fraction form
    66,081.52/99,220.70 = 26,715.52/x
  3. Step 3: Cross multiply
    66,081.52x = 99,220.70 × 26,715.52
  4. Step 4: Simplify right side
    66,081.52x = 2,650,732,595.26
  5. Step 5: Solve for x
    x = 2,650,732,595.26/66,081.52
  6. Step 6: Final answer
    x = 40,113.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.