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Finding the Fourth Proportional to 55,140.60, 82,710.90 and 52,807.80

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Solution

The fourth proportional to 55,140.60, 82,710.90 and 52,807.80 is: 79,211.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,140.60 : 82,710.90 = 52,807.80 : x
  2. Step 2: Convert to fraction form
    55,140.60/82,710.90 = 52,807.80/x
  3. Step 3: Cross multiply
    55,140.60x = 82,710.90 × 52,807.80
  4. Step 4: Simplify right side
    55,140.60x = 4,367,780,665.02
  5. Step 5: Solve for x
    x = 4,367,780,665.02/55,140.60
  6. Step 6: Final answer
    x = 79,211.70

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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.