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Finding the Fourth Proportional to 72,503.10, 100,008.18 and 52,389.54

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Solution

The fourth proportional to 72,503.10, 100,008.18 and 52,389.54 is: 72,264.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,503.10 : 100,008.18 = 52,389.54 : x
  2. Step 2: Convert to fraction form
    72,503.10/100,008.18 = 52,389.54/x
  3. Step 3: Cross multiply
    72,503.10x = 100,008.18 × 52,389.54
  4. Step 4: Simplify right side
    72,503.10x = 5,239,382,546.44
  5. Step 5: Solve for x
    x = 5,239,382,546.44/72,503.10
  6. Step 6: Final answer
    x = 72,264.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.