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Finding the Fourth Proportional to 65,521.48, 90,419.64 and 37,227.20

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Solution

The fourth proportional to 65,521.48, 90,419.64 and 37,227.20 is: 51,373.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,521.48 : 90,419.64 = 37,227.20 : x
  2. Step 2: Convert to fraction form
    65,521.48/90,419.64 = 37,227.20/x
  3. Step 3: Cross multiply
    65,521.48x = 90,419.64 × 37,227.20
  4. Step 4: Simplify right side
    65,521.48x = 3,366,070,022.21
  5. Step 5: Solve for x
    x = 3,366,070,022.21/65,521.48
  6. Step 6: Final answer
    x = 51,373.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.