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Finding the Fourth Proportional to 53,200.80, 79,801.20 and 45,655.65

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Solution

The fourth proportional to 53,200.80, 79,801.20 and 45,655.65 is: 68,483.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,200.80 : 79,801.20 = 45,655.65 : x
  2. Step 2: Convert to fraction form
    53,200.80/79,801.20 = 45,655.65/x
  3. Step 3: Cross multiply
    53,200.80x = 79,801.20 × 45,655.65
  4. Step 4: Simplify right side
    53,200.80x = 3,643,375,656.78
  5. Step 5: Solve for x
    x = 3,643,375,656.78/53,200.80
  6. Step 6: Final answer
    x = 68,483.48

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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.