Home / 86,878.28-130,291.50-30,708.02

Finding the Fourth Proportional to 86,878.28, 130,291.50 and 30,708.02

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Solution

The fourth proportional to 86,878.28, 130,291.50 and 30,708.02 is: 46,052.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,878.28 : 130,291.50 = 30,708.02 : x
  2. Step 2: Convert to fraction form
    86,878.28/130,291.50 = 30,708.02/x
  3. Step 3: Cross multiply
    86,878.28x = 130,291.50 × 30,708.02
  4. Step 4: Simplify right side
    86,878.28x = 4,000,993,987.83
  5. Step 5: Solve for x
    x = 4,000,993,987.83/86,878.28
  6. Step 6: Final answer
    x = 46,052.87

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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.