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Finding the Fourth Proportional to 53,465.80, 80,328.30 and 47,763.40

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Solution

The fourth proportional to 53,465.80, 80,328.30 and 47,763.40 is: 71,760.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,465.80 : 80,328.30 = 47,763.40 : x
  2. Step 2: Convert to fraction form
    53,465.80/80,328.30 = 47,763.40/x
  3. Step 3: Cross multiply
    53,465.80x = 80,328.30 × 47,763.40
  4. Step 4: Simplify right side
    53,465.80x = 3,836,752,724.22
  5. Step 5: Solve for x
    x = 3,836,752,724.22/53,465.80
  6. Step 6: Final answer
    x = 71,760.88

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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.