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Finding the Fourth Proportional to 86,613.76, 119,445.87 and 57,490.62

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Solution

The fourth proportional to 86,613.76, 119,445.87 and 57,490.62 is: 79,283.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,613.76 : 119,445.87 = 57,490.62 : x
  2. Step 2: Convert to fraction form
    86,613.76/119,445.87 = 57,490.62/x
  3. Step 3: Cross multiply
    86,613.76x = 119,445.87 × 57,490.62
  4. Step 4: Simplify right side
    86,613.76x = 6,867,017,122.74
  5. Step 5: Solve for x
    x = 6,867,017,122.74/86,613.76
  6. Step 6: Final answer
    x = 79,283.21

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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.