Home / 43,809.20-65,718.60-42,426.80

Finding the Fourth Proportional to 43,809.20, 65,718.60 and 42,426.80

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Solution

The fourth proportional to 43,809.20, 65,718.60 and 42,426.80 is: 63,644.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,809.20 : 65,718.60 = 42,426.80 : x
  2. Step 2: Convert to fraction form
    43,809.20/65,718.60 = 42,426.80/x
  3. Step 3: Cross multiply
    43,809.20x = 65,718.60 × 42,426.80
  4. Step 4: Simplify right side
    43,809.20x = 2,788,229,898.48
  5. Step 5: Solve for x
    x = 2,788,229,898.48/43,809.20
  6. Step 6: Final answer
    x = 63,644.85

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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.