Home / 90,721.57-125,211.27-58,447.12

Finding the Fourth Proportional to 90,721.57, 125,211.27 and 58,447.12

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Solution

The fourth proportional to 90,721.57, 125,211.27 and 58,447.12 is: 80,667.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,721.57 : 125,211.27 = 58,447.12 : x
  2. Step 2: Convert to fraction form
    90,721.57/125,211.27 = 58,447.12/x
  3. Step 3: Cross multiply
    90,721.57x = 125,211.27 × 58,447.12
  4. Step 4: Simplify right side
    90,721.57x = 7,318,238,123.04
  5. Step 5: Solve for x
    x = 7,318,238,123.04/90,721.57
  6. Step 6: Final answer
    x = 80,667.01

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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.