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Finding the Fourth Proportional to 64,793.80, 89,416.92 and 36,116.40

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Solution

The fourth proportional to 64,793.80, 89,416.92 and 36,116.40 is: 49,841.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,793.80 : 89,416.92 = 36,116.40 : x
  2. Step 2: Convert to fraction form
    64,793.80/89,416.92 = 36,116.40/x
  3. Step 3: Cross multiply
    64,793.80x = 89,416.92 × 36,116.40
  4. Step 4: Simplify right side
    64,793.80x = 3,229,417,249.49
  5. Step 5: Solve for x
    x = 3,229,417,249.49/64,793.80
  6. Step 6: Final answer
    x = 49,841.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.