Home / 52,101.62-78,151.32-12,658.94

Finding the Fourth Proportional to 52,101.62, 78,151.32 and 12,658.94

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Solution

The fourth proportional to 52,101.62, 78,151.32 and 12,658.94 is: 18,988.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,101.62 : 78,151.32 = 12,658.94 : x
  2. Step 2: Convert to fraction form
    52,101.62/78,151.32 = 12,658.94/x
  3. Step 3: Cross multiply
    52,101.62x = 78,151.32 × 12,658.94
  4. Step 4: Simplify right side
    52,101.62x = 989,312,870.80
  5. Step 5: Solve for x
    x = 989,312,870.80/52,101.62
  6. Step 6: Final answer
    x = 18,988.14

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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.