Home / 90,817.06-136,247.45-28,487.56

Finding the Fourth Proportional to 90,817.06, 136,247.45 and 28,487.56

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Solution

The fourth proportional to 90,817.06, 136,247.45 and 28,487.56 is: 42,738.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,817.06 : 136,247.45 = 28,487.56 : x
  2. Step 2: Convert to fraction form
    90,817.06/136,247.45 = 28,487.56/x
  3. Step 3: Cross multiply
    90,817.06x = 136,247.45 × 28,487.56
  4. Step 4: Simplify right side
    90,817.06x = 3,881,357,406.72
  5. Step 5: Solve for x
    x = 3,881,357,406.72/90,817.06
  6. Step 6: Final answer
    x = 42,738.20

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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.