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Finding the Fourth Proportional to 60,664.88, 91,003.08 and 20,712.08

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Solution

The fourth proportional to 60,664.88, 91,003.08 and 20,712.08 is: 31,070.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,664.88 : 91,003.08 = 20,712.08 : x
  2. Step 2: Convert to fraction form
    60,664.88/91,003.08 = 20,712.08/x
  3. Step 3: Cross multiply
    60,664.88x = 91,003.08 × 20,712.08
  4. Step 4: Simplify right side
    60,664.88x = 1,884,863,073.21
  5. Step 5: Solve for x
    x = 1,884,863,073.21/60,664.88
  6. Step 6: Final answer
    x = 31,070.09

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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.