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Finding the Fourth Proportional to 77,777.69, 107,275.92 and 58,658.27

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Solution

The fourth proportional to 77,777.69, 107,275.92 and 58,658.27 is: 80,905.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,777.69 : 107,275.92 = 58,658.27 : x
  2. Step 2: Convert to fraction form
    77,777.69/107,275.92 = 58,658.27/x
  3. Step 3: Cross multiply
    77,777.69x = 107,275.92 × 58,658.27
  4. Step 4: Simplify right side
    77,777.69x = 6,292,619,879.86
  5. Step 5: Solve for x
    x = 6,292,619,879.86/77,777.69
  6. Step 6: Final answer
    x = 80,905.20

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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.