Home / 71,700.36-98,945.76-39,868.92

Finding the Fourth Proportional to 71,700.36, 98,945.76 and 39,868.92

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Solution

The fourth proportional to 71,700.36, 98,945.76 and 39,868.92 is: 55,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,700.36 : 98,945.76 = 39,868.92 : x
  2. Step 2: Convert to fraction form
    71,700.36/98,945.76 = 39,868.92/x
  3. Step 3: Cross multiply
    71,700.36x = 98,945.76 × 39,868.92
  4. Step 4: Simplify right side
    71,700.36x = 3,944,860,589.78
  5. Step 5: Solve for x
    x = 3,944,860,589.78/71,700.36
  6. Step 6: Final answer
    x = 55,018.70

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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.