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Finding the Fourth Proportional to 84,970.72, 117,251.72 and 47,242.72

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Solution

The fourth proportional to 84,970.72, 117,251.72 and 47,242.72 is: 65,190.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,970.72 : 117,251.72 = 47,242.72 : x
  2. Step 2: Convert to fraction form
    84,970.72/117,251.72 = 47,242.72/x
  3. Step 3: Cross multiply
    84,970.72x = 117,251.72 × 47,242.72
  4. Step 4: Simplify right side
    84,970.72x = 5,539,290,177.48
  5. Step 5: Solve for x
    x = 5,539,290,177.48/84,970.72
  6. Step 6: Final answer
    x = 65,190.58

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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.