Home / 71,500.71-98,660.19-39,669.74

Finding the Fourth Proportional to 71,500.71, 98,660.19 and 39,669.74

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Solution

The fourth proportional to 71,500.71, 98,660.19 and 39,669.74 is: 54,738.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,500.71 : 98,660.19 = 39,669.74 : x
  2. Step 2: Convert to fraction form
    71,500.71/98,660.19 = 39,669.74/x
  3. Step 3: Cross multiply
    71,500.71x = 98,660.19 × 39,669.74
  4. Step 4: Simplify right side
    71,500.71x = 3,913,824,085.65
  5. Step 5: Solve for x
    x = 3,913,824,085.65/71,500.71
  6. Step 6: Final answer
    x = 54,738.25

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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.