Home / 45,128.68-67,619.04-31,957.40

Finding the Fourth Proportional to 45,128.68, 67,619.04 and 31,957.40

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Solution

The fourth proportional to 45,128.68, 67,619.04 and 31,957.40 is: 47,883.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,128.68 : 67,619.04 = 31,957.40 : x
  2. Step 2: Convert to fraction form
    45,128.68/67,619.04 = 31,957.40/x
  3. Step 3: Cross multiply
    45,128.68x = 67,619.04 × 31,957.40
  4. Step 4: Simplify right side
    45,128.68x = 2,160,928,708.90
  5. Step 5: Solve for x
    x = 2,160,928,708.90/45,128.68
  6. Step 6: Final answer
    x = 47,883.71

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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.