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Finding the Fourth Proportional to 40,407.66, 60,611.48 and 12,705.66

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Solution

The fourth proportional to 40,407.66, 60,611.48 and 12,705.66 is: 19,058.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,407.66 : 60,611.48 = 12,705.66 : x
  2. Step 2: Convert to fraction form
    40,407.66/60,611.48 = 12,705.66/x
  3. Step 3: Cross multiply
    40,407.66x = 60,611.48 × 12,705.66
  4. Step 4: Simplify right side
    40,407.66x = 770,108,888.74
  5. Step 5: Solve for x
    x = 770,108,888.74/40,407.66
  6. Step 6: Final answer
    x = 19,058.49

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Similar ratio
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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.