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Finding the Fourth Proportional to 40,707.99, 61,070.76 and 12,627.49

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Solution

The fourth proportional to 40,707.99, 61,070.76 and 12,627.49 is: 18,943.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,707.99 : 61,070.76 = 12,627.49 : x
  2. Step 2: Convert to fraction form
    40,707.99/61,070.76 = 12,627.49/x
  3. Step 3: Cross multiply
    40,707.99x = 61,070.76 × 12,627.49
  4. Step 4: Simplify right side
    40,707.99x = 771,170,411.19
  5. Step 5: Solve for x
    x = 771,170,411.19/40,707.99
  6. Step 6: Final answer
    x = 18,943.96

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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.