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Finding the Fourth Proportional to 55,613.80, 83,420.70 and 55,030.60

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Solution

The fourth proportional to 55,613.80, 83,420.70 and 55,030.60 is: 82,545.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,613.80 : 83,420.70 = 55,030.60 : x
  2. Step 2: Convert to fraction form
    55,613.80/83,420.70 = 55,030.60/x
  3. Step 3: Cross multiply
    55,613.80x = 83,420.70 × 55,030.60
  4. Step 4: Simplify right side
    55,613.80x = 4,590,691,173.42
  5. Step 5: Solve for x
    x = 4,590,691,173.42/55,613.80
  6. Step 6: Final answer
    x = 82,545.90

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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.