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Finding the Fourth Proportional to 87,657.63, 120,943.04 and 59,017.65

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Solution

The fourth proportional to 87,657.63, 120,943.04 and 59,017.65 is: 81,427.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,657.63 : 120,943.04 = 59,017.65 : x
  2. Step 2: Convert to fraction form
    87,657.63/120,943.04 = 59,017.65/x
  3. Step 3: Cross multiply
    87,657.63x = 120,943.04 × 59,017.65
  4. Step 4: Simplify right side
    87,657.63x = 7,137,773,709.57
  5. Step 5: Solve for x
    x = 7,137,773,709.57/87,657.63
  6. Step 6: Final answer
    x = 81,427.87

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1.5x scale

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.