Home / 71,116.08-98,144.40-39,285.60

Finding the Fourth Proportional to 71,116.08, 98,144.40 and 39,285.60

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Solution

The fourth proportional to 71,116.08, 98,144.40 and 39,285.60 is: 54,216.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,116.08 : 98,144.40 = 39,285.60 : x
  2. Step 2: Convert to fraction form
    71,116.08/98,144.40 = 39,285.60/x
  3. Step 3: Cross multiply
    71,116.08x = 98,144.40 × 39,285.60
  4. Step 4: Simplify right side
    71,116.08x = 3,855,661,640.64
  5. Step 5: Solve for x
    x = 3,855,661,640.64/71,116.08
  6. Step 6: Final answer
    x = 54,216.45

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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.