Home / 80,545.51-111,157.82-48,715.75

Finding the Fourth Proportional to 80,545.51, 111,157.82 and 48,715.75

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Solution

The fourth proportional to 80,545.51, 111,157.82 and 48,715.75 is: 67,230.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,545.51 : 111,157.82 = 48,715.75 : x
  2. Step 2: Convert to fraction form
    80,545.51/111,157.82 = 48,715.75/x
  3. Step 3: Cross multiply
    80,545.51x = 111,157.82 × 48,715.75
  4. Step 4: Simplify right side
    80,545.51x = 5,415,136,569.67
  5. Step 5: Solve for x
    x = 5,415,136,569.67/80,545.51
  6. Step 6: Final answer
    x = 67,230.77

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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.