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Finding the Fourth Proportional to 86,767.80, 130,034.04 and 39,323.64

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Solution

The fourth proportional to 86,767.80, 130,034.04 and 39,323.64 is: 58,932.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,767.80 : 130,034.04 = 39,323.64 : x
  2. Step 2: Convert to fraction form
    86,767.80/130,034.04 = 39,323.64/x
  3. Step 3: Cross multiply
    86,767.80x = 130,034.04 × 39,323.64
  4. Step 4: Simplify right side
    86,767.80x = 5,113,411,776.71
  5. Step 5: Solve for x
    x = 5,113,411,776.71/86,767.80
  6. Step 6: Final answer
    x = 58,932.14

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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.