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Finding the Fourth Proportional to 89,878.21, 124,009.80 and 54,944.07

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Solution

The fourth proportional to 89,878.21, 124,009.80 and 54,944.07 is: 75,809.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,878.21 : 124,009.80 = 54,944.07 : x
  2. Step 2: Convert to fraction form
    89,878.21/124,009.80 = 54,944.07/x
  3. Step 3: Cross multiply
    89,878.21x = 124,009.80 × 54,944.07
  4. Step 4: Simplify right side
    89,878.21x = 6,813,603,467.42
  5. Step 5: Solve for x
    x = 6,813,603,467.42/89,878.21
  6. Step 6: Final answer
    x = 75,809.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.