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Finding the Fourth Proportional to 86,689.66, 130,052.67 and 49,267.06

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Solution

The fourth proportional to 86,689.66, 130,052.67 and 49,267.06 is: 73,910.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,689.66 : 130,052.67 = 49,267.06 : x
  2. Step 2: Convert to fraction form
    86,689.66/130,052.67 = 49,267.06/x
  3. Step 3: Cross multiply
    86,689.66x = 130,052.67 × 49,267.06
  4. Step 4: Simplify right side
    86,689.66x = 6,407,312,696.05
  5. Step 5: Solve for x
    x = 6,407,312,696.05/86,689.66
  6. Step 6: Final answer
    x = 73,910.92

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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.