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Finding the Fourth Proportional to 40,479.45, 60,713.69 and 10,899.06

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Solution

The fourth proportional to 40,479.45, 60,713.69 and 10,899.06 is: 16,347.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,479.45 : 60,713.69 = 10,899.06 : x
  2. Step 2: Convert to fraction form
    40,479.45/60,713.69 = 10,899.06/x
  3. Step 3: Cross multiply
    40,479.45x = 60,713.69 × 10,899.06
  4. Step 4: Simplify right side
    40,479.45x = 661,721,867.96
  5. Step 5: Solve for x
    x = 661,721,867.96/40,479.45
  6. Step 6: Final answer
    x = 16,347.11

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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.