Home / 88,103.78-121,580.12-47,816.73

Finding the Fourth Proportional to 88,103.78, 121,580.12 and 47,816.73

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Solution

The fourth proportional to 88,103.78, 121,580.12 and 47,816.73 is: 65,985.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,103.78 : 121,580.12 = 47,816.73 : x
  2. Step 2: Convert to fraction form
    88,103.78/121,580.12 = 47,816.73/x
  3. Step 3: Cross multiply
    88,103.78x = 121,580.12 × 47,816.73
  4. Step 4: Simplify right side
    88,103.78x = 5,813,563,890.95
  5. Step 5: Solve for x
    x = 5,813,563,890.95/88,103.78
  6. Step 6: Final answer
    x = 65,985.41

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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.