Home / 40,821.20-61,231.80-40,432.40

Finding the Fourth Proportional to 40,821.20, 61,231.80 and 40,432.40

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Solution

The fourth proportional to 40,821.20, 61,231.80 and 40,432.40 is: 60,648.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,821.20 : 61,231.80 = 40,432.40 : x
  2. Step 2: Convert to fraction form
    40,821.20/61,231.80 = 40,432.40/x
  3. Step 3: Cross multiply
    40,821.20x = 61,231.80 × 40,432.40
  4. Step 4: Simplify right side
    40,821.20x = 2,475,748,630.32
  5. Step 5: Solve for x
    x = 2,475,748,630.32/40,821.20
  6. Step 6: Final answer
    x = 60,648.60

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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.