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Finding the Fourth Proportional to 74,780.68, 112,245.84 and 53,745.40

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Solution

The fourth proportional to 74,780.68, 112,245.84 and 53,745.40 is: 80,671.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,780.68 : 112,245.84 = 53,745.40 : x
  2. Step 2: Convert to fraction form
    74,780.68/112,245.84 = 53,745.40/x
  3. Step 3: Cross multiply
    74,780.68x = 112,245.84 × 53,745.40
  4. Step 4: Simplify right side
    74,780.68x = 6,032,697,569.14
  5. Step 5: Solve for x
    x = 6,032,697,569.14/74,780.68
  6. Step 6: Final answer
    x = 80,671.87

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1.5x scale

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.