Home / 39,079.20-58,508.40-30,415.20

Finding the Fourth Proportional to 39,079.20, 58,508.40 and 30,415.20

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Solution

The fourth proportional to 39,079.20, 58,508.40 and 30,415.20 is: 45,536.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,079.20 : 58,508.40 = 30,415.20 : x
  2. Step 2: Convert to fraction form
    39,079.20/58,508.40 = 30,415.20/x
  3. Step 3: Cross multiply
    39,079.20x = 58,508.40 × 30,415.20
  4. Step 4: Simplify right side
    39,079.20x = 1,779,544,687.68
  5. Step 5: Solve for x
    x = 1,779,544,687.68/39,079.20
  6. Step 6: Final answer
    x = 45,536.88

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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.