Home / 87,402.74-120,551.26-64,742.69

Finding the Fourth Proportional to 87,402.74, 120,551.26 and 64,742.69

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Solution

The fourth proportional to 87,402.74, 120,551.26 and 64,742.69 is: 89,297.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,402.74 : 120,551.26 = 64,742.69 : x
  2. Step 2: Convert to fraction form
    87,402.74/120,551.26 = 64,742.69/x
  3. Step 3: Cross multiply
    87,402.74x = 120,551.26 × 64,742.69
  4. Step 4: Simplify right side
    87,402.74x = 7,804,812,855.29
  5. Step 5: Solve for x
    x = 7,804,812,855.29/87,402.74
  6. Step 6: Final answer
    x = 89,297.12

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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.