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Finding the Fourth Proportional to 85,803.78, 118,409.25 and 52,269.78

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Solution

The fourth proportional to 85,803.78, 118,409.25 and 52,269.78 is: 72,132.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,803.78 : 118,409.25 = 52,269.78 : x
  2. Step 2: Convert to fraction form
    85,803.78/118,409.25 = 52,269.78/x
  3. Step 3: Cross multiply
    85,803.78x = 118,409.25 × 52,269.78
  4. Step 4: Simplify right side
    85,803.78x = 6,189,225,447.47
  5. Step 5: Solve for x
    x = 6,189,225,447.47/85,803.78
  6. Step 6: Final answer
    x = 72,132.32

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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.