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Finding the Fourth Proportional to 86,470.70, 119,309.22 and 52,478.42

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Solution

The fourth proportional to 86,470.70, 119,309.22 and 52,478.42 is: 72,407.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,470.70 : 119,309.22 = 52,478.42 : x
  2. Step 2: Convert to fraction form
    86,470.70/119,309.22 = 52,478.42/x
  3. Step 3: Cross multiply
    86,470.70x = 119,309.22 × 52,478.42
  4. Step 4: Simplify right side
    86,470.70x = 6,261,159,357.03
  5. Step 5: Solve for x
    x = 6,261,159,357.03/86,470.70
  6. Step 6: Final answer
    x = 72,407.87

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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.