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Finding the Fourth Proportional to 90,699.71, 136,050.92 and 34,542.92

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Solution

The fourth proportional to 90,699.71, 136,050.92 and 34,542.92 is: 51,814.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,699.71 : 136,050.92 = 34,542.92 : x
  2. Step 2: Convert to fraction form
    90,699.71/136,050.92 = 34,542.92/x
  3. Step 3: Cross multiply
    90,699.71x = 136,050.92 × 34,542.92
  4. Step 4: Simplify right side
    90,699.71x = 4,699,595,192.52
  5. Step 5: Solve for x
    x = 4,699,595,192.52/90,699.71
  6. Step 6: Final answer
    x = 51,814.89

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1.5x scale

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.