Home / 72,455.10-108,677.38-19,860.45

Finding the Fourth Proportional to 72,455.10, 108,677.38 and 19,860.45

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Solution

The fourth proportional to 72,455.10, 108,677.38 and 19,860.45 is: 29,789.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,455.10 : 108,677.38 = 19,860.45 : x
  2. Step 2: Convert to fraction form
    72,455.10/108,677.38 = 19,860.45/x
  3. Step 3: Cross multiply
    72,455.10x = 108,677.38 × 19,860.45
  4. Step 4: Simplify right side
    72,455.10x = 2,158,381,671.62
  5. Step 5: Solve for x
    x = 2,158,381,671.62/72,455.10
  6. Step 6: Final answer
    x = 29,789.23

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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.