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Finding the Fourth Proportional to 90,981.88, 136,472.82 and 35,539

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Solution

The fourth proportional to 90,981.88, 136,472.82 and 35,539 is: 53,308.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,981.88 : 136,472.82 = 35,539 : x
  2. Step 2: Convert to fraction form
    90,981.88/136,472.82 = 35,539/x
  3. Step 3: Cross multiply
    90,981.88x = 136,472.82 × 35,539
  4. Step 4: Simplify right side
    90,981.88x = 4,850,107,549.98
  5. Step 5: Solve for x
    x = 4,850,107,549.98/90,981.88
  6. Step 6: Final answer
    x = 53,308.50

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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.