Home / 74,287.28-111,463.60-30,000.40

Finding the Fourth Proportional to 74,287.28, 111,463.60 and 30,000.40

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Solution

The fourth proportional to 74,287.28, 111,463.60 and 30,000.40 is: 45,013.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,287.28 : 111,463.60 = 30,000.40 : x
  2. Step 2: Convert to fraction form
    74,287.28/111,463.60 = 30,000.40/x
  3. Step 3: Cross multiply
    74,287.28x = 111,463.60 × 30,000.40
  4. Step 4: Simplify right side
    74,287.28x = 3,343,952,585.44
  5. Step 5: Solve for x
    x = 3,343,952,585.44/74,287.28
  6. Step 6: Final answer
    x = 45,013.80

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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.