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Finding the Fourth Proportional to 89,049.40, 133,574.10 and 42,393.40

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Solution

The fourth proportional to 89,049.40, 133,574.10 and 42,393.40 is: 63,590.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,049.40 : 133,574.10 = 42,393.40 : x
  2. Step 2: Convert to fraction form
    89,049.40/133,574.10 = 42,393.40/x
  3. Step 3: Cross multiply
    89,049.40x = 133,574.10 × 42,393.40
  4. Step 4: Simplify right side
    89,049.40x = 5,662,660,250.94
  5. Step 5: Solve for x
    x = 5,662,660,250.94/89,049.40
  6. Step 6: Final answer
    x = 63,590.10

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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.