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Finding the Fourth Proportional to 78,291.54, 117,437.31 and 22,887.54

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Solution

The fourth proportional to 78,291.54, 117,437.31 and 22,887.54 is: 34,331.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,291.54 : 117,437.31 = 22,887.54 : x
  2. Step 2: Convert to fraction form
    78,291.54/117,437.31 = 22,887.54/x
  3. Step 3: Cross multiply
    78,291.54x = 117,437.31 × 22,887.54
  4. Step 4: Simplify right side
    78,291.54x = 2,687,851,130.12
  5. Step 5: Solve for x
    x = 2,687,851,130.12/78,291.54
  6. Step 6: Final answer
    x = 34,331.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.