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Finding the Fourth Proportional to 90,277.40, 135,437.70 and 43,491.80

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Solution

The fourth proportional to 90,277.40, 135,437.70 and 43,491.80 is: 65,248.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,277.40 : 135,437.70 = 43,491.80 : x
  2. Step 2: Convert to fraction form
    90,277.40/135,437.70 = 43,491.80/x
  3. Step 3: Cross multiply
    90,277.40x = 135,437.70 × 43,491.80
  4. Step 4: Simplify right side
    90,277.40x = 5,890,429,360.86
  5. Step 5: Solve for x
    x = 5,890,429,360.86/90,277.40
  6. Step 6: Final answer
    x = 65,248.11

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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.