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Finding the Fourth Proportional to 77,879.52, 116,768.16 and 38,462.40

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Solution

The fourth proportional to 77,879.52, 116,768.16 and 38,462.40 is: 57,668.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,879.52 : 116,768.16 = 38,462.40 : x
  2. Step 2: Convert to fraction form
    77,879.52/116,768.16 = 38,462.40/x
  3. Step 3: Cross multiply
    77,879.52x = 116,768.16 × 38,462.40
  4. Step 4: Simplify right side
    77,879.52x = 4,491,183,677.18
  5. Step 5: Solve for x
    x = 4,491,183,677.18/77,879.52
  6. Step 6: Final answer
    x = 57,668.35

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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.