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Finding the Fourth Proportional to 115,040.64, 172,327.68 and 59,520

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Solution

The fourth proportional to 115,040.64, 172,327.68 and 59,520 is: 89,159.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,040.64 : 172,327.68 = 59,520 : x
  2. Step 2: Convert to fraction form
    115,040.64/172,327.68 = 59,520/x
  3. Step 3: Cross multiply
    115,040.64x = 172,327.68 × 59,520
  4. Step 4: Simplify right side
    115,040.64x = 10,256,943,513.60
  5. Step 5: Solve for x
    x = 10,256,943,513.60/115,040.64
  6. Step 6: Final answer
    x = 89,159.31

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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.