Home / 86,988.06-130,272.71-49,456.31

Finding the Fourth Proportional to 86,988.06, 130,272.71 and 49,456.31

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Solution

The fourth proportional to 86,988.06, 130,272.71 and 49,456.31 is: 74,065.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,988.06 : 130,272.71 = 49,456.31 : x
  2. Step 2: Convert to fraction form
    86,988.06/130,272.71 = 49,456.31/x
  3. Step 3: Cross multiply
    86,988.06x = 130,272.71 × 49,456.31
  4. Step 4: Simplify right side
    86,988.06x = 6,442,806,631.66
  5. Step 5: Solve for x
    x = 6,442,806,631.66/86,988.06
  6. Step 6: Final answer
    x = 74,065.41

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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.