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Finding the Fourth Proportional to 71,356.35, 98,471.89 and 39,090.27

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Solution

The fourth proportional to 71,356.35, 98,471.89 and 39,090.27 is: 53,944.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,356.35 : 98,471.89 = 39,090.27 : x
  2. Step 2: Convert to fraction form
    71,356.35/98,471.89 = 39,090.27/x
  3. Step 3: Cross multiply
    71,356.35x = 98,471.89 × 39,090.27
  4. Step 4: Simplify right side
    71,356.35x = 3,849,292,767.51
  5. Step 5: Solve for x
    x = 3,849,292,767.51/71,356.35
  6. Step 6: Final answer
    x = 53,944.64

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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.