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Finding the Fourth Proportional to 40,000.40, 60,000.60 and 39,708.80

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Solution

The fourth proportional to 40,000.40, 60,000.60 and 39,708.80 is: 59,563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,000.40 : 60,000.60 = 39,708.80 : x
  2. Step 2: Convert to fraction form
    40,000.40/60,000.60 = 39,708.80/x
  3. Step 3: Cross multiply
    40,000.40x = 60,000.60 × 39,708.80
  4. Step 4: Simplify right side
    40,000.40x = 2,382,551,825.28
  5. Step 5: Solve for x
    x = 2,382,551,825.28/40,000.40
  6. Step 6: Final answer
    x = 59,563.20

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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.