Home / 86,999.40-130,542.30-49,588.20

Finding the Fourth Proportional to 86,999.40, 130,542.30 and 49,588.20

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Solution

The fourth proportional to 86,999.40, 130,542.30 and 49,588.20 is: 74,406.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,999.40 : 130,542.30 = 49,588.20 : x
  2. Step 2: Convert to fraction form
    86,999.40/130,542.30 = 49,588.20/x
  3. Step 3: Cross multiply
    86,999.40x = 130,542.30 × 49,588.20
  4. Step 4: Simplify right side
    86,999.40x = 6,473,357,680.86
  5. Step 5: Solve for x
    x = 6,473,357,680.86/86,999.40
  6. Step 6: Final answer
    x = 74,406.92

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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.