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Finding the Fourth Proportional to 71,224.36, 98,289.12 and 39,392.08

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Solution

The fourth proportional to 71,224.36, 98,289.12 and 39,392.08 is: 54,360.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,224.36 : 98,289.12 = 39,392.08 : x
  2. Step 2: Convert to fraction form
    71,224.36/98,289.12 = 39,392.08/x
  3. Step 3: Cross multiply
    71,224.36x = 98,289.12 × 39,392.08
  4. Step 4: Simplify right side
    71,224.36x = 3,871,812,878.17
  5. Step 5: Solve for x
    x = 3,871,812,878.17/71,224.36
  6. Step 6: Final answer
    x = 54,360.80

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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.