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Finding the Fourth Proportional to 86,773.68, 130,176.80 and 39,392.12

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Solution

The fourth proportional to 86,773.68, 130,176.80 and 39,392.12 is: 59,095.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,773.68 : 130,176.80 = 39,392.12 : x
  2. Step 2: Convert to fraction form
    86,773.68/130,176.80 = 39,392.12/x
  3. Step 3: Cross multiply
    86,773.68x = 130,176.80 × 39,392.12
  4. Step 4: Simplify right side
    86,773.68x = 5,127,940,126.82
  5. Step 5: Solve for x
    x = 5,127,940,126.82/86,773.68
  6. Step 6: Final answer
    x = 59,095.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.