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Finding the Fourth Proportional to 65,565.32, 90,482.40 and 41,691.47

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Solution

The fourth proportional to 65,565.32, 90,482.40 and 41,691.47 is: 57,535.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,565.32 : 90,482.40 = 41,691.47 : x
  2. Step 2: Convert to fraction form
    65,565.32/90,482.40 = 41,691.47/x
  3. Step 3: Cross multiply
    65,565.32x = 90,482.40 × 41,691.47
  4. Step 4: Simplify right side
    65,565.32x = 3,772,343,812.72
  5. Step 5: Solve for x
    x = 3,772,343,812.72/65,565.32
  6. Step 6: Final answer
    x = 57,535.66

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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.