Home / 51,988.42-77,981.95-12,545.34

Finding the Fourth Proportional to 51,988.42, 77,981.95 and 12,545.34

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Solution

The fourth proportional to 51,988.42, 77,981.95 and 12,545.34 is: 18,817.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,988.42 : 77,981.95 = 12,545.34 : x
  2. Step 2: Convert to fraction form
    51,988.42/77,981.95 = 12,545.34/x
  3. Step 3: Cross multiply
    51,988.42x = 77,981.95 × 12,545.34
  4. Step 4: Simplify right side
    51,988.42x = 978,310,076.61
  5. Step 5: Solve for x
    x = 978,310,076.61/51,988.42
  6. Step 6: Final answer
    x = 18,817.85

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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.