Home / 81,205.83-121,807.40-24,279.87

Finding the Fourth Proportional to 81,205.83, 121,807.40 and 24,279.87

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Solution

The fourth proportional to 81,205.83, 121,807.40 and 24,279.87 is: 36,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,205.83 : 121,807.40 = 24,279.87 : x
  2. Step 2: Convert to fraction form
    81,205.83/121,807.40 = 24,279.87/x
  3. Step 3: Cross multiply
    81,205.83x = 121,807.40 × 24,279.87
  4. Step 4: Simplify right side
    81,205.83x = 2,957,467,106.60
  5. Step 5: Solve for x
    x = 2,957,467,106.60/81,205.83
  6. Step 6: Final answer
    x = 36,419.40

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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.