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Finding the Fourth Proportional to 90,686.50, 136,037.59 and 25,022.50

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Solution

The fourth proportional to 90,686.50, 136,037.59 and 25,022.50 is: 37,535.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,686.50 : 136,037.59 = 25,022.50 : x
  2. Step 2: Convert to fraction form
    90,686.50/136,037.59 = 25,022.50/x
  3. Step 3: Cross multiply
    90,686.50x = 136,037.59 × 25,022.50
  4. Step 4: Simplify right side
    90,686.50x = 3,404,000,595.78
  5. Step 5: Solve for x
    x = 3,404,000,595.78/90,686.50
  6. Step 6: Final answer
    x = 37,535.91

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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.