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Finding the Fourth Proportional to 74,668.50, 112,002.75 and 25,420.50

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Solution

The fourth proportional to 74,668.50, 112,002.75 and 25,420.50 is: 38,130.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,668.50 : 112,002.75 = 25,420.50 : x
  2. Step 2: Convert to fraction form
    74,668.50/112,002.75 = 25,420.50/x
  3. Step 3: Cross multiply
    74,668.50x = 112,002.75 × 25,420.50
  4. Step 4: Simplify right side
    74,668.50x = 2,847,165,906.38
  5. Step 5: Solve for x
    x = 2,847,165,906.38/74,668.50
  6. Step 6: Final answer
    x = 38,130.75

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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.