Home / 87,381.51-120,574.15-49,135.74

Finding the Fourth Proportional to 87,381.51, 120,574.15 and 49,135.74

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Solution

The fourth proportional to 87,381.51, 120,574.15 and 49,135.74 is: 67,800.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,381.51 : 120,574.15 = 49,135.74 : x
  2. Step 2: Convert to fraction form
    87,381.51/120,574.15 = 49,135.74/x
  3. Step 3: Cross multiply
    87,381.51x = 120,574.15 × 49,135.74
  4. Step 4: Simplify right side
    87,381.51x = 5,924,500,085.12
  5. Step 5: Solve for x
    x = 5,924,500,085.12/87,381.51
  6. Step 6: Final answer
    x = 67,800.39

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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.