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Finding the Fourth Proportional to 65,465.72, 90,353.63 and 38,614.83

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Solution

The fourth proportional to 65,465.72, 90,353.63 and 38,614.83 is: 53,294.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,465.72 : 90,353.63 = 38,614.83 : x
  2. Step 2: Convert to fraction form
    65,465.72/90,353.63 = 38,614.83/x
  3. Step 3: Cross multiply
    65,465.72x = 90,353.63 × 38,614.83
  4. Step 4: Simplify right side
    65,465.72x = 3,488,989,602.84
  5. Step 5: Solve for x
    x = 3,488,989,602.84/65,465.72
  6. Step 6: Final answer
    x = 53,294.91

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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.