Home / 86,988.36-130,540.92-31,584.36

Finding the Fourth Proportional to 86,988.36, 130,540.92 and 31,584.36

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Solution

The fourth proportional to 86,988.36, 130,540.92 and 31,584.36 is: 47,397.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,988.36 : 130,540.92 = 31,584.36 : x
  2. Step 2: Convert to fraction form
    86,988.36/130,540.92 = 31,584.36/x
  3. Step 3: Cross multiply
    86,988.36x = 130,540.92 × 31,584.36
  4. Step 4: Simplify right side
    86,988.36x = 4,123,051,412.01
  5. Step 5: Solve for x
    x = 4,123,051,412.01/86,988.36
  6. Step 6: Final answer
    x = 47,397.74

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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.