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Finding the Fourth Proportional to 72,482.72, 100,029.52 and 45,274.91

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Solution

The fourth proportional to 72,482.72, 100,029.52 and 45,274.91 is: 62,481.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,482.72 : 100,029.52 = 45,274.91 : x
  2. Step 2: Convert to fraction form
    72,482.72/100,029.52 = 45,274.91/x
  3. Step 3: Cross multiply
    72,482.72x = 100,029.52 × 45,274.91
  4. Step 4: Simplify right side
    72,482.72x = 4,528,827,270.95
  5. Step 5: Solve for x
    x = 4,528,827,270.95/72,482.72
  6. Step 6: Final answer
    x = 62,481.48

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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.