Home / 87,261.28-120,417.27-53,326.51

Finding the Fourth Proportional to 87,261.28, 120,417.27 and 53,326.51

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Solution

The fourth proportional to 87,261.28, 120,417.27 and 53,326.51 is: 73,588.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,261.28 : 120,417.27 = 53,326.51 : x
  2. Step 2: Convert to fraction form
    87,261.28/120,417.27 = 53,326.51/x
  3. Step 3: Cross multiply
    87,261.28x = 120,417.27 × 53,326.51
  4. Step 4: Simplify right side
    87,261.28x = 6,421,432,752.83
  5. Step 5: Solve for x
    x = 6,421,432,752.83/87,261.28
  6. Step 6: Final answer
    x = 73,588.57

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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.