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Finding the Fourth Proportional to 89,898.40, 134,815.20 and 45,510.40

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Solution

The fourth proportional to 89,898.40, 134,815.20 and 45,510.40 is: 68,249.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,898.40 : 134,815.20 = 45,510.40 : x
  2. Step 2: Convert to fraction form
    89,898.40/134,815.20 = 45,510.40/x
  3. Step 3: Cross multiply
    89,898.40x = 134,815.20 × 45,510.40
  4. Step 4: Simplify right side
    89,898.40x = 6,135,493,678.08
  5. Step 5: Solve for x
    x = 6,135,493,678.08/89,898.40
  6. Step 6: Final answer
    x = 68,249.20

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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.