Home / 72,737.36-100,320.56-49,780.76

Finding the Fourth Proportional to 72,737.36, 100,320.56 and 49,780.76

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Solution

The fourth proportional to 72,737.36, 100,320.56 and 49,780.76 is: 68,658.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,737.36 : 100,320.56 = 49,780.76 : x
  2. Step 2: Convert to fraction form
    72,737.36/100,320.56 = 49,780.76/x
  3. Step 3: Cross multiply
    72,737.36x = 100,320.56 × 49,780.76
  4. Step 4: Simplify right side
    72,737.36x = 4,994,033,720.43
  5. Step 5: Solve for x
    x = 4,994,033,720.43/72,737.36
  6. Step 6: Final answer
    x = 68,658.44

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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.