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Finding the Fourth Proportional to 85,332.44, 127,988.67 and 53,648.96

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Solution

The fourth proportional to 85,332.44, 127,988.67 and 53,648.96 is: 80,467.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,332.44 : 127,988.67 = 53,648.96 : x
  2. Step 2: Convert to fraction form
    85,332.44/127,988.67 = 53,648.96/x
  3. Step 3: Cross multiply
    85,332.44x = 127,988.67 × 53,648.96
  4. Step 4: Simplify right side
    85,332.44x = 6,866,459,037.28
  5. Step 5: Solve for x
    x = 6,866,459,037.28/85,332.44
  6. Step 6: Final answer
    x = 80,467.16

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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.