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Finding the Fourth Proportional to 80,798.50, 121,217.19 and 25,394.50

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Solution

The fourth proportional to 80,798.50, 121,217.19 and 25,394.50 is: 38,097.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,798.50 : 121,217.19 = 25,394.50 : x
  2. Step 2: Convert to fraction form
    80,798.50/121,217.19 = 25,394.50/x
  3. Step 3: Cross multiply
    80,798.50x = 121,217.19 × 25,394.50
  4. Step 4: Simplify right side
    80,798.50x = 3,078,249,931.46
  5. Step 5: Solve for x
    x = 3,078,249,931.46/80,798.50
  6. Step 6: Final answer
    x = 38,097.86

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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.