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Finding the Fourth Proportional to 89,879, 134,834.32 and 30,700.80

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Solution

The fourth proportional to 89,879, 134,834.32 and 30,700.80 is: 46,056.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,879 : 134,834.32 = 30,700.80 : x
  2. Step 2: Convert to fraction form
    89,879/134,834.32 = 30,700.80/x
  3. Step 3: Cross multiply
    89,879x = 134,834.32 × 30,700.80
  4. Step 4: Simplify right side
    89,879x = 4,139,521,491.46
  5. Step 5: Solve for x
    x = 4,139,521,491.46/89,879
  6. Step 6: Final answer
    x = 46,056.60

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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.