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Finding the Fourth Proportional to 86,842.72, 130,159.92 and 44,742.88

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Solution

The fourth proportional to 86,842.72, 130,159.92 and 44,742.88 is: 67,060.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,842.72 : 130,159.92 = 44,742.88 : x
  2. Step 2: Convert to fraction form
    86,842.72/130,159.92 = 44,742.88/x
  3. Step 3: Cross multiply
    86,842.72x = 130,159.92 × 44,742.88
  4. Step 4: Simplify right side
    86,842.72x = 5,823,729,681.37
  5. Step 5: Solve for x
    x = 5,823,729,681.37/86,842.72
  6. Step 6: Final answer
    x = 67,060.65

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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.