Home / 87,364.95-120,266.10-64,661.15

Finding the Fourth Proportional to 87,364.95, 120,266.10 and 64,661.15

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Solution

The fourth proportional to 87,364.95, 120,266.10 and 64,661.15 is: 89,012.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,364.95 : 120,266.10 = 64,661.15 : x
  2. Step 2: Convert to fraction form
    87,364.95/120,266.10 = 64,661.15/x
  3. Step 3: Cross multiply
    87,364.95x = 120,266.10 × 64,661.15
  4. Step 4: Simplify right side
    87,364.95x = 7,776,543,730.68
  5. Step 5: Solve for x
    x = 7,776,543,730.68/87,364.95
  6. Step 6: Final answer
    x = 89,012.17

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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.