Home / 71,610.92-98,823-39,782.80

Finding the Fourth Proportional to 71,610.92, 98,823 and 39,782.80

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Solution

The fourth proportional to 71,610.92, 98,823 and 39,782.80 is: 54,900.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,610.92 : 98,823 = 39,782.80 : x
  2. Step 2: Convert to fraction form
    71,610.92/98,823 = 39,782.80/x
  3. Step 3: Cross multiply
    71,610.92x = 98,823 × 39,782.80
  4. Step 4: Simplify right side
    71,610.92x = 3,931,455,644.40
  5. Step 5: Solve for x
    x = 3,931,455,644.40/71,610.92
  6. Step 6: Final answer
    x = 54,900.23

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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.