Home / 47,432.61-65,470.68-31,311.72

Finding the Fourth Proportional to 47,432.61, 65,470.68 and 31,311.72

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Solution

The fourth proportional to 47,432.61, 65,470.68 and 31,311.72 is: 43,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,432.61 : 65,470.68 = 31,311.72 : x
  2. Step 2: Convert to fraction form
    47,432.61/65,470.68 = 31,311.72/x
  3. Step 3: Cross multiply
    47,432.61x = 65,470.68 × 31,311.72
  4. Step 4: Simplify right side
    47,432.61x = 2,049,999,600.37
  5. Step 5: Solve for x
    x = 2,049,999,600.37/47,432.61
  6. Step 6: Final answer
    x = 43,219.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.