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Finding the Fourth Proportional to 82,776.60, 124,164.90 and 73,591.20

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Solution

The fourth proportional to 82,776.60, 124,164.90 and 73,591.20 is: 110,386.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,776.60 : 124,164.90 = 73,591.20 : x
  2. Step 2: Convert to fraction form
    82,776.60/124,164.90 = 73,591.20/x
  3. Step 3: Cross multiply
    82,776.60x = 124,164.90 × 73,591.20
  4. Step 4: Simplify right side
    82,776.60x = 9,137,443,988.88
  5. Step 5: Solve for x
    x = 9,137,443,988.88/82,776.60
  6. Step 6: Final answer
    x = 110,386.80

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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.