Home / 85,403.16-117,760.50-55,148.76

Finding the Fourth Proportional to 85,403.16, 117,760.50 and 55,148.76

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Solution

The fourth proportional to 85,403.16, 117,760.50 and 55,148.76 is: 76,043.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,403.16 : 117,760.50 = 55,148.76 : x
  2. Step 2: Convert to fraction form
    85,403.16/117,760.50 = 55,148.76/x
  3. Step 3: Cross multiply
    85,403.16x = 117,760.50 × 55,148.76
  4. Step 4: Simplify right side
    85,403.16x = 6,494,345,551.98
  5. Step 5: Solve for x
    x = 6,494,345,551.98/85,403.16
  6. Step 6: Final answer
    x = 76,043.39

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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.