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Finding the Fourth Proportional to 90,378.00, 135,614.28 and 65,622.53

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Solution

The fourth proportional to 90,378.00, 135,614.28 and 65,622.53 is: 98,468.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,378.00 : 135,614.28 = 65,622.53 : x
  2. Step 2: Convert to fraction form
    90,378.00/135,614.28 = 65,622.53/x
  3. Step 3: Cross multiply
    90,378.00x = 135,614.28 × 65,622.53
  4. Step 4: Simplify right side
    90,378.00x = 8,899,351,807.74
  5. Step 5: Solve for x
    x = 8,899,351,807.74/90,378.00
  6. Step 6: Final answer
    x = 98,468.12

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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.