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Finding the Fourth Proportional to 79,858.32, 119,831.40 and 67,320.24

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Solution

The fourth proportional to 79,858.32, 119,831.40 and 67,320.24 is: 101,017.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,858.32 : 119,831.40 = 67,320.24 : x
  2. Step 2: Convert to fraction form
    79,858.32/119,831.40 = 67,320.24/x
  3. Step 3: Cross multiply
    79,858.32x = 119,831.40 × 67,320.24
  4. Step 4: Simplify right side
    79,858.32x = 8,067,078,607.54
  5. Step 5: Solve for x
    x = 8,067,078,607.54/79,858.32
  6. Step 6: Final answer
    x = 101,017.38

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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.