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Finding the Fourth Proportional to 83,859.52, 115,774.08 and 55,603.60

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Solution

The fourth proportional to 83,859.52, 115,774.08 and 55,603.60 is: 76,764.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,859.52 : 115,774.08 = 55,603.60 : x
  2. Step 2: Convert to fraction form
    83,859.52/115,774.08 = 55,603.60/x
  3. Step 3: Cross multiply
    83,859.52x = 115,774.08 × 55,603.60
  4. Step 4: Simplify right side
    83,859.52x = 6,437,455,634.69
  5. Step 5: Solve for x
    x = 6,437,455,634.69/83,859.52
  6. Step 6: Final answer
    x = 76,764.76

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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.