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Finding the Fourth Proportional to 89,178.95, 133,769.15 and 30,013.77

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Solution

The fourth proportional to 89,178.95, 133,769.15 and 30,013.77 is: 45,020.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,178.95 : 133,769.15 = 30,013.77 : x
  2. Step 2: Convert to fraction form
    89,178.95/133,769.15 = 30,013.77/x
  3. Step 3: Cross multiply
    89,178.95x = 133,769.15 × 30,013.77
  4. Step 4: Simplify right side
    89,178.95x = 4,014,915,752.22
  5. Step 5: Solve for x
    x = 4,014,915,752.22/89,178.95
  6. Step 6: Final answer
    x = 45,020.89

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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.