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Finding the Fourth Proportional to 79,853.40, 119,549.70 and 48,749.40

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Solution

The fourth proportional to 79,853.40, 119,549.70 and 48,749.40 is: 72,983.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,853.40 : 119,549.70 = 48,749.40 : x
  2. Step 2: Convert to fraction form
    79,853.40/119,549.70 = 48,749.40/x
  3. Step 3: Cross multiply
    79,853.40x = 119,549.70 × 48,749.40
  4. Step 4: Simplify right side
    79,853.40x = 5,827,976,145.18
  5. Step 5: Solve for x
    x = 5,827,976,145.18/79,853.40
  6. Step 6: Final answer
    x = 72,983.44

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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.