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Finding the Fourth Proportional to 71,048.16, 98,047.26 and 39,218.40

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Solution

The fourth proportional to 71,048.16, 98,047.26 and 39,218.40 is: 54,121.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,048.16 : 98,047.26 = 39,218.40 : x
  2. Step 2: Convert to fraction form
    71,048.16/98,047.26 = 39,218.40/x
  3. Step 3: Cross multiply
    71,048.16x = 98,047.26 × 39,218.40
  4. Step 4: Simplify right side
    71,048.16x = 3,845,256,661.58
  5. Step 5: Solve for x
    x = 3,845,256,661.58/71,048.16
  6. Step 6: Final answer
    x = 54,121.83

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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.