Home / 47,799.40-65,966.64-28,680

Finding the Fourth Proportional to 47,799.40, 65,966.64 and 28,680

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Solution

The fourth proportional to 47,799.40, 65,966.64 and 28,680 is: 39,580.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,799.40 : 65,966.64 = 28,680 : x
  2. Step 2: Convert to fraction form
    47,799.40/65,966.64 = 28,680/x
  3. Step 3: Cross multiply
    47,799.40x = 65,966.64 × 28,680
  4. Step 4: Simplify right side
    47,799.40x = 1,891,923,235.20
  5. Step 5: Solve for x
    x = 1,891,923,235.20/47,799.40
  6. Step 6: Final answer
    x = 39,580.48

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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.