Home / 71,512.94-98,790.80-57,154.38

Finding the Fourth Proportional to 71,512.94, 98,790.80 and 57,154.38

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Solution

The fourth proportional to 71,512.94, 98,790.80 and 57,154.38 is: 78,955.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,512.94 : 98,790.80 = 57,154.38 : x
  2. Step 2: Convert to fraction form
    71,512.94/98,790.80 = 57,154.38/x
  3. Step 3: Cross multiply
    71,512.94x = 98,790.80 × 57,154.38
  4. Step 4: Simplify right side
    71,512.94x = 5,646,326,637.93
  5. Step 5: Solve for x
    x = 5,646,326,637.93/71,512.94
  6. Step 6: Final answer
    x = 78,955.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.