Home / 52,105.95-78,158.67-12,663.18

Finding the Fourth Proportional to 52,105.95, 78,158.67 and 12,663.18

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Solution

The fourth proportional to 52,105.95, 78,158.67 and 12,663.18 is: 18,994.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,105.95 : 78,158.67 = 12,663.18 : x
  2. Step 2: Convert to fraction form
    52,105.95/78,158.67 = 12,663.18/x
  3. Step 3: Cross multiply
    52,105.95x = 78,158.67 × 12,663.18
  4. Step 4: Simplify right side
    52,105.95x = 989,737,306.77
  5. Step 5: Solve for x
    x = 989,737,306.77/52,105.95
  6. Step 6: Final answer
    x = 18,994.71

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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.