Home / 86,619.38-129,980.90-37,371.38

Finding the Fourth Proportional to 86,619.38, 129,980.90 and 37,371.38

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Solution

The fourth proportional to 86,619.38, 129,980.90 and 37,371.38 is: 56,079.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,619.38 : 129,980.90 = 37,371.38 : x
  2. Step 2: Convert to fraction form
    86,619.38/129,980.90 = 37,371.38/x
  3. Step 3: Cross multiply
    86,619.38x = 129,980.90 × 37,371.38
  4. Step 4: Simplify right side
    86,619.38x = 4,857,565,050.17
  5. Step 5: Solve for x
    x = 4,857,565,050.17/86,619.38
  6. Step 6: Final answer
    x = 56,079.43

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1.5x scale

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.