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Finding the Fourth Proportional to 103,316.66, 154,914.74 and 40,062.88

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Solution

The fourth proportional to 103,316.66, 154,914.74 and 40,062.88 is: 60,070.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,316.66 : 154,914.74 = 40,062.88 : x
  2. Step 2: Convert to fraction form
    103,316.66/154,914.74 = 40,062.88/x
  3. Step 3: Cross multiply
    103,316.66x = 154,914.74 × 40,062.88
  4. Step 4: Simplify right side
    103,316.66x = 6,206,330,638.85
  5. Step 5: Solve for x
    x = 6,206,330,638.85/103,316.66
  6. Step 6: Final answer
    x = 60,070.96

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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.