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Finding the Fourth Proportional to 40,454.50, 60,681.75 and 12,752.50

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Solution

The fourth proportional to 40,454.50, 60,681.75 and 12,752.50 is: 19,128.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,454.50 : 60,681.75 = 12,752.50 : x
  2. Step 2: Convert to fraction form
    40,454.50/60,681.75 = 12,752.50/x
  3. Step 3: Cross multiply
    40,454.50x = 60,681.75 × 12,752.50
  4. Step 4: Simplify right side
    40,454.50x = 773,844,016.88
  5. Step 5: Solve for x
    x = 773,844,016.88/40,454.50
  6. Step 6: Final answer
    x = 19,128.75

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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.