Home / 75,004.20-112,506.30-66,839.40

Finding the Fourth Proportional to 75,004.20, 112,506.30 and 66,839.40

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Solution

The fourth proportional to 75,004.20, 112,506.30 and 66,839.40 is: 100,259.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,004.20 : 112,506.30 = 66,839.40 : x
  2. Step 2: Convert to fraction form
    75,004.20/112,506.30 = 66,839.40/x
  3. Step 3: Cross multiply
    75,004.20x = 112,506.30 × 66,839.40
  4. Step 4: Simplify right side
    75,004.20x = 7,519,853,588.22
  5. Step 5: Solve for x
    x = 7,519,853,588.22/75,004.20
  6. Step 6: Final answer
    x = 100,259.10

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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.