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Finding the Fourth Proportional to 90,710.40, 136,065.90 and 27,531.06

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Solution

The fourth proportional to 90,710.40, 136,065.90 and 27,531.06 is: 41,296.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,710.40 : 136,065.90 = 27,531.06 : x
  2. Step 2: Convert to fraction form
    90,710.40/136,065.90 = 27,531.06/x
  3. Step 3: Cross multiply
    90,710.40x = 136,065.90 × 27,531.06
  4. Step 4: Simplify right side
    90,710.40x = 3,746,038,456.85
  5. Step 5: Solve for x
    x = 3,746,038,456.85/90,710.40
  6. Step 6: Final answer
    x = 41,296.68

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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.