Home / 81,312.87-112,213.38-49,047.33

Finding the Fourth Proportional to 81,312.87, 112,213.38 and 49,047.33

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Solution

The fourth proportional to 81,312.87, 112,213.38 and 49,047.33 is: 67,686.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,312.87 : 112,213.38 = 49,047.33 : x
  2. Step 2: Convert to fraction form
    81,312.87/112,213.38 = 49,047.33/x
  3. Step 3: Cross multiply
    81,312.87x = 112,213.38 × 49,047.33
  4. Step 4: Simplify right side
    81,312.87x = 5,503,766,679.28
  5. Step 5: Solve for x
    x = 5,503,766,679.28/81,312.87
  6. Step 6: Final answer
    x = 67,686.29

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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.