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Finding the Fourth Proportional to 90,601.70, 135,902.55 and 28,264.10

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Solution

The fourth proportional to 90,601.70, 135,902.55 and 28,264.10 is: 42,396.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,601.70 : 135,902.55 = 28,264.10 : x
  2. Step 2: Convert to fraction form
    90,601.70/135,902.55 = 28,264.10/x
  3. Step 3: Cross multiply
    90,601.70x = 135,902.55 × 28,264.10
  4. Step 4: Simplify right side
    90,601.70x = 3,841,163,263.46
  5. Step 5: Solve for x
    x = 3,841,163,263.46/90,601.70
  6. Step 6: Final answer
    x = 42,396.15

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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.