Home / 78,211.11-117,312.08-48,231.12

Finding the Fourth Proportional to 78,211.11, 117,312.08 and 48,231.12

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Solution

The fourth proportional to 78,211.11, 117,312.08 and 48,231.12 is: 72,343.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,211.11 : 117,312.08 = 48,231.12 : x
  2. Step 2: Convert to fraction form
    78,211.11/117,312.08 = 48,231.12/x
  3. Step 3: Cross multiply
    78,211.11x = 117,312.08 × 48,231.12
  4. Step 4: Simplify right side
    78,211.11x = 5,658,092,766.77
  5. Step 5: Solve for x
    x = 5,658,092,766.77/78,211.11
  6. Step 6: Final answer
    x = 72,343.85

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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.