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Finding the Fourth Proportional to 69,061.74, 95,305.62 and 40,781.40

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Solution

The fourth proportional to 69,061.74, 95,305.62 and 40,781.40 is: 56,278.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,061.74 : 95,305.62 = 40,781.40 : x
  2. Step 2: Convert to fraction form
    69,061.74/95,305.62 = 40,781.40/x
  3. Step 3: Cross multiply
    69,061.74x = 95,305.62 × 40,781.40
  4. Step 4: Simplify right side
    69,061.74x = 3,886,696,611.47
  5. Step 5: Solve for x
    x = 3,886,696,611.47/69,061.74
  6. Step 6: Final answer
    x = 56,278.58

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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.