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Finding the Fourth Proportional to 71,289.01, 98,377.37 and 39,456.01

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Solution

The fourth proportional to 71,289.01, 98,377.37 and 39,456.01 is: 54,448.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,289.01 : 98,377.37 = 39,456.01 : x
  2. Step 2: Convert to fraction form
    71,289.01/98,377.37 = 39,456.01/x
  3. Step 3: Cross multiply
    71,289.01x = 98,377.37 × 39,456.01
  4. Step 4: Simplify right side
    71,289.01x = 3,881,578,297.21
  5. Step 5: Solve for x
    x = 3,881,578,297.21/71,289.01
  6. Step 6: Final answer
    x = 54,448.48

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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.