Home / 78,520.23-117,718.38-39,055.82

Finding the Fourth Proportional to 78,520.23, 117,718.38 and 39,055.82

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Solution

The fourth proportional to 78,520.23, 117,718.38 and 39,055.82 is: 58,552.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,520.23 : 117,718.38 = 39,055.82 : x
  2. Step 2: Convert to fraction form
    78,520.23/117,718.38 = 39,055.82/x
  3. Step 3: Cross multiply
    78,520.23x = 117,718.38 × 39,055.82
  4. Step 4: Simplify right side
    78,520.23x = 4,597,587,271.38
  5. Step 5: Solve for x
    x = 4,597,587,271.38/78,520.23
  6. Step 6: Final answer
    x = 58,552.90

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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.