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Finding the Fourth Proportional to 40,456.40, 60,619.80 and 25,638.80

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Solution

The fourth proportional to 40,456.40, 60,619.80 and 25,638.80 is: 38,417.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,456.40 : 60,619.80 = 25,638.80 : x
  2. Step 2: Convert to fraction form
    40,456.40/60,619.80 = 25,638.80/x
  3. Step 3: Cross multiply
    40,456.40x = 60,619.80 × 25,638.80
  4. Step 4: Simplify right side
    40,456.40x = 1,554,218,928.24
  5. Step 5: Solve for x
    x = 1,554,218,928.24/40,456.40
  6. Step 6: Final answer
    x = 38,417.13

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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.