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Finding the Fourth Proportional to 86,425.50, 119,366.50 and 57,695.14

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Solution

The fourth proportional to 86,425.50, 119,366.50 and 57,695.14 is: 79,685.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,425.50 : 119,366.50 = 57,695.14 : x
  2. Step 2: Convert to fraction form
    86,425.50/119,366.50 = 57,695.14/x
  3. Step 3: Cross multiply
    86,425.50x = 119,366.50 × 57,695.14
  4. Step 4: Simplify right side
    86,425.50x = 6,886,866,928.81
  5. Step 5: Solve for x
    x = 6,886,866,928.81/86,425.50
  6. Step 6: Final answer
    x = 79,685.59

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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.