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Finding the Fourth Proportional to 74,487.53, 102,794.82 and 40,498.30

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Solution

The fourth proportional to 74,487.53, 102,794.82 and 40,498.30 is: 55,888.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,487.53 : 102,794.82 = 40,498.30 : x
  2. Step 2: Convert to fraction form
    74,487.53/102,794.82 = 40,498.30/x
  3. Step 3: Cross multiply
    74,487.53x = 102,794.82 × 40,498.30
  4. Step 4: Simplify right side
    74,487.53x = 4,163,015,256.31
  5. Step 5: Solve for x
    x = 4,163,015,256.31/74,487.53
  6. Step 6: Final answer
    x = 55,888.76

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1.5x scale

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.