Home / 81,068.85-121,603.68-36,643.59

Finding the Fourth Proportional to 81,068.85, 121,603.68 and 36,643.59

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Solution

The fourth proportional to 81,068.85, 121,603.68 and 36,643.59 is: 54,965.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,068.85 : 121,603.68 = 36,643.59 : x
  2. Step 2: Convert to fraction form
    81,068.85/121,603.68 = 36,643.59/x
  3. Step 3: Cross multiply
    81,068.85x = 121,603.68 × 36,643.59
  4. Step 4: Simplify right side
    81,068.85x = 4,455,995,392.41
  5. Step 5: Solve for x
    x = 4,455,995,392.41/81,068.85
  6. Step 6: Final answer
    x = 54,965.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.