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Finding the Fourth Proportional to 55,602.80, 83,404.20 and 40,840.55

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Solution

The fourth proportional to 55,602.80, 83,404.20 and 40,840.55 is: 61,260.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,602.80 : 83,404.20 = 40,840.55 : x
  2. Step 2: Convert to fraction form
    55,602.80/83,404.20 = 40,840.55/x
  3. Step 3: Cross multiply
    55,602.80x = 83,404.20 × 40,840.55
  4. Step 4: Simplify right side
    55,602.80x = 3,406,273,400.31
  5. Step 5: Solve for x
    x = 3,406,273,400.31/55,602.80
  6. Step 6: Final answer
    x = 61,260.83

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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.