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Finding the Fourth Proportional to 89,299.95, 133,981.11 and 55,980.60

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Solution

The fourth proportional to 89,299.95, 133,981.11 and 55,980.60 is: 83,990.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,299.95 : 133,981.11 = 55,980.60 : x
  2. Step 2: Convert to fraction form
    89,299.95/133,981.11 = 55,980.60/x
  3. Step 3: Cross multiply
    89,299.95x = 133,981.11 × 55,980.60
  4. Step 4: Simplify right side
    89,299.95x = 7,500,342,926.47
  5. Step 5: Solve for x
    x = 7,500,342,926.47/89,299.95
  6. Step 6: Final answer
    x = 83,990.45

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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.