Home / 58,439.20-87,615.60-39,672.40

Finding the Fourth Proportional to 58,439.20, 87,615.60 and 39,672.40

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Solution

The fourth proportional to 58,439.20, 87,615.60 and 39,672.40 is: 59,479.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,439.20 : 87,615.60 = 39,672.40 : x
  2. Step 2: Convert to fraction form
    58,439.20/87,615.60 = 39,672.40/x
  3. Step 3: Cross multiply
    58,439.20x = 87,615.60 × 39,672.40
  4. Step 4: Simplify right side
    58,439.20x = 3,475,921,129.44
  5. Step 5: Solve for x
    x = 3,475,921,129.44/58,439.20
  6. Step 6: Final answer
    x = 59,479.27

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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.