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Finding the Fourth Proportional to 172,328.45, 258,492.77 and 54,009.01

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Solution

The fourth proportional to 172,328.45, 258,492.77 and 54,009.01 is: 81,013.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,328.45 : 258,492.77 = 54,009.01 : x
  2. Step 2: Convert to fraction form
    172,328.45/258,492.77 = 54,009.01/x
  3. Step 3: Cross multiply
    172,328.45x = 258,492.77 × 54,009.01
  4. Step 4: Simplify right side
    172,328.45x = 13,960,937,037.35
  5. Step 5: Solve for x
    x = 13,960,937,037.35/172,328.45
  6. Step 6: Final answer
    x = 81,013.54

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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.