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Finding the Fourth Proportional to 71,541.42, 98,727.09 and 39,710.25

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Solution

The fourth proportional to 71,541.42, 98,727.09 and 39,710.25 is: 54,800.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,541.42 : 98,727.09 = 39,710.25 : x
  2. Step 2: Convert to fraction form
    71,541.42/98,727.09 = 39,710.25/x
  3. Step 3: Cross multiply
    71,541.42x = 98,727.09 × 39,710.25
  4. Step 4: Simplify right side
    71,541.42x = 3,920,477,425.67
  5. Step 5: Solve for x
    x = 3,920,477,425.67/71,541.42
  6. Step 6: Final answer
    x = 54,800.11

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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.