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Finding the Fourth Proportional to 89,019, 122,846.22 and 51,305.40

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Solution

The fourth proportional to 89,019, 122,846.22 and 51,305.40 is: 70,801.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,019 : 122,846.22 = 51,305.40 : x
  2. Step 2: Convert to fraction form
    89,019/122,846.22 = 51,305.40/x
  3. Step 3: Cross multiply
    89,019x = 122,846.22 × 51,305.40
  4. Step 4: Simplify right side
    89,019x = 6,302,674,455.59
  5. Step 5: Solve for x
    x = 6,302,674,455.59/89,019
  6. Step 6: Final answer
    x = 70,801.45

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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.