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Finding the Fourth Proportional to 55,478.80, 83,218.20 and 37,764.10

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Solution

The fourth proportional to 55,478.80, 83,218.20 and 37,764.10 is: 56,646.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,478.80 : 83,218.20 = 37,764.10 : x
  2. Step 2: Convert to fraction form
    55,478.80/83,218.20 = 37,764.10/x
  3. Step 3: Cross multiply
    55,478.80x = 83,218.20 × 37,764.10
  4. Step 4: Simplify right side
    55,478.80x = 3,142,660,426.62
  5. Step 5: Solve for x
    x = 3,142,660,426.62/55,478.80
  6. Step 6: Final answer
    x = 56,646.15

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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.