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Finding the Fourth Proportional to 172,330.95, 258,496.52 and 54,011.51

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Solution

The fourth proportional to 172,330.95, 258,496.52 and 54,011.51 is: 81,017.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,330.95 : 258,496.52 = 54,011.51 : x
  2. Step 2: Convert to fraction form
    172,330.95/258,496.52 = 54,011.51/x
  3. Step 3: Cross multiply
    172,330.95x = 258,496.52 × 54,011.51
  4. Step 4: Simplify right side
    172,330.95x = 13,961,787,374.95
  5. Step 5: Solve for x
    x = 13,961,787,374.95/172,330.95
  6. Step 6: Final answer
    x = 81,017.29

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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.