Home / 72,246.50-99,698.66-39,981.10

Finding the Fourth Proportional to 72,246.50, 99,698.66 and 39,981.10

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Solution

The fourth proportional to 72,246.50, 99,698.66 and 39,981.10 is: 55,173.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,246.50 : 99,698.66 = 39,981.10 : x
  2. Step 2: Convert to fraction form
    72,246.50/99,698.66 = 39,981.10/x
  3. Step 3: Cross multiply
    72,246.50x = 99,698.66 × 39,981.10
  4. Step 4: Simplify right side
    72,246.50x = 3,986,062,095.33
  5. Step 5: Solve for x
    x = 3,986,062,095.33/72,246.50
  6. Step 6: Final answer
    x = 55,173.09

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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.