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Finding the Fourth Proportional to 172,275.61, 258,413.41 and 53,956.21

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Solution

The fourth proportional to 172,275.61, 258,413.41 and 53,956.21 is: 80,934.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,275.61 : 258,413.41 = 53,956.21 : x
  2. Step 2: Convert to fraction form
    172,275.61/258,413.41 = 53,956.21/x
  3. Step 3: Cross multiply
    172,275.61x = 258,413.41 × 53,956.21
  4. Step 4: Simplify right side
    172,275.61x = 13,943,006,924.71
  5. Step 5: Solve for x
    x = 13,943,006,924.71/172,275.61
  6. Step 6: Final answer
    x = 80,934.31

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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.