Home / 85,158.15-117,518.27-49,368.90

Finding the Fourth Proportional to 85,158.15, 117,518.27 and 49,368.90

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Solution

The fourth proportional to 85,158.15, 117,518.27 and 49,368.90 is: 68,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,158.15 : 117,518.27 = 49,368.90 : x
  2. Step 2: Convert to fraction form
    85,158.15/117,518.27 = 49,368.90/x
  3. Step 3: Cross multiply
    85,158.15x = 117,518.27 × 49,368.90
  4. Step 4: Simplify right side
    85,158.15x = 5,801,747,719.80
  5. Step 5: Solve for x
    x = 5,801,747,719.80/85,158.15
  6. Step 6: Final answer
    x = 68,129.10

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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.