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Finding the Fourth Proportional to 87,062.51, 120,169.91 and 51,264.11

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Solution

The fourth proportional to 87,062.51, 120,169.91 and 51,264.11 is: 70,758.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,062.51 : 120,169.91 = 51,264.11 : x
  2. Step 2: Convert to fraction form
    87,062.51/120,169.91 = 51,264.11/x
  3. Step 3: Cross multiply
    87,062.51x = 120,169.91 × 51,264.11
  4. Step 4: Simplify right side
    87,062.51x = 6,160,403,484.93
  5. Step 5: Solve for x
    x = 6,160,403,484.93/87,062.51
  6. Step 6: Final answer
    x = 70,758.40

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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.