Home / 87,721.13-121,047.80-51,904.86

Finding the Fourth Proportional to 87,721.13, 121,047.80 and 51,904.86

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Solution

The fourth proportional to 87,721.13, 121,047.80 and 51,904.86 is: 71,624.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,721.13 : 121,047.80 = 51,904.86 : x
  2. Step 2: Convert to fraction form
    87,721.13/121,047.80 = 51,904.86/x
  3. Step 3: Cross multiply
    87,721.13x = 121,047.80 × 51,904.86
  4. Step 4: Simplify right side
    87,721.13x = 6,282,968,852.78
  5. Step 5: Solve for x
    x = 6,282,968,852.78/87,721.13
  6. Step 6: Final answer
    x = 71,624.35

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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.