Home / 87,830-121,205.40-48,086

Finding the Fourth Proportional to 87,830, 121,205.40 and 48,086

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Solution

The fourth proportional to 87,830, 121,205.40 and 48,086 is: 66,358.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,830 : 121,205.40 = 48,086 : x
  2. Step 2: Convert to fraction form
    87,830/121,205.40 = 48,086/x
  3. Step 3: Cross multiply
    87,830x = 121,205.40 × 48,086
  4. Step 4: Simplify right side
    87,830x = 5,828,282,864.40
  5. Step 5: Solve for x
    x = 5,828,282,864.40/87,830
  6. Step 6: Final answer
    x = 66,358.68

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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.