Home / 47,340.77-65,321.17-28,479.11

Finding the Fourth Proportional to 47,340.77, 65,321.17 and 28,479.11

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Solution

The fourth proportional to 47,340.77, 65,321.17 and 28,479.11 is: 39,295.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,340.77 : 65,321.17 = 28,479.11 : x
  2. Step 2: Convert to fraction form
    47,340.77/65,321.17 = 28,479.11/x
  3. Step 3: Cross multiply
    47,340.77x = 65,321.17 × 28,479.11
  4. Step 4: Simplify right side
    47,340.77x = 1,860,288,387.96
  5. Step 5: Solve for x
    x = 1,860,288,387.96/47,340.77
  6. Step 6: Final answer
    x = 39,295.70

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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.