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Finding the Fourth Proportional to 89,586.68, 134,400.80 and 30,422.40

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Solution

The fourth proportional to 89,586.68, 134,400.80 and 30,422.40 is: 45,640.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,586.68 : 134,400.80 = 30,422.40 : x
  2. Step 2: Convert to fraction form
    89,586.68/134,400.80 = 30,422.40/x
  3. Step 3: Cross multiply
    89,586.68x = 134,400.80 × 30,422.40
  4. Step 4: Simplify right side
    89,586.68x = 4,088,794,745.81
  5. Step 5: Solve for x
    x = 4,088,794,745.81/89,586.68
  6. Step 6: Final answer
    x = 45,640.66

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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.