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Finding the Fourth Proportional to 40,387.99, 60,584.01 and 15,430.20

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Solution

The fourth proportional to 40,387.99, 60,584.01 and 15,430.20 is: 23,146.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,387.99 : 60,584.01 = 15,430.20 : x
  2. Step 2: Convert to fraction form
    40,387.99/60,584.01 = 15,430.20/x
  3. Step 3: Cross multiply
    40,387.99x = 60,584.01 × 15,430.20
  4. Step 4: Simplify right side
    40,387.99x = 934,823,391.10
  5. Step 5: Solve for x
    x = 934,823,391.10/40,387.99
  6. Step 6: Final answer
    x = 23,146.07

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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.