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Finding the Fourth Proportional to 89,854.40, 134,635.80 and 56,514.80

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Solution

The fourth proportional to 89,854.40, 134,635.80 and 56,514.80 is: 84,680.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,854.40 : 134,635.80 = 56,514.80 : x
  2. Step 2: Convert to fraction form
    89,854.40/134,635.80 = 56,514.80/x
  3. Step 3: Cross multiply
    89,854.40x = 134,635.80 × 56,514.80
  4. Step 4: Simplify right side
    89,854.40x = 7,608,915,309.84
  5. Step 5: Solve for x
    x = 7,608,915,309.84/89,854.40
  6. Step 6: Final answer
    x = 84,680.50

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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.