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Finding the Fourth Proportional to 90,451.48, 135,683.70 and 23,890.95

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Solution

The fourth proportional to 90,451.48, 135,683.70 and 23,890.95 is: 35,838.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,451.48 : 135,683.70 = 23,890.95 : x
  2. Step 2: Convert to fraction form
    90,451.48/135,683.70 = 23,890.95/x
  3. Step 3: Cross multiply
    90,451.48x = 135,683.70 × 23,890.95
  4. Step 4: Simplify right side
    90,451.48x = 3,241,612,492.52
  5. Step 5: Solve for x
    x = 3,241,612,492.52/90,451.48
  6. Step 6: Final answer
    x = 35,838.14

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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.