Home / 40,740.50-61,112.04-12,660.71

Finding the Fourth Proportional to 40,740.50, 61,112.04 and 12,660.71

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Solution

The fourth proportional to 40,740.50, 61,112.04 and 12,660.71 is: 18,991.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,740.50 : 61,112.04 = 12,660.71 : x
  2. Step 2: Convert to fraction form
    40,740.50/61,112.04 = 12,660.71/x
  3. Step 3: Cross multiply
    40,740.50x = 61,112.04 × 12,660.71
  4. Step 4: Simplify right side
    40,740.50x = 773,721,462.91
  5. Step 5: Solve for x
    x = 773,721,462.91/40,740.50
  6. Step 6: Final answer
    x = 18,991.46

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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.