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Finding the Fourth Proportional to 89,009.40, 122,843.88 and 53,199.12

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Solution

The fourth proportional to 89,009.40, 122,843.88 and 53,199.12 is: 73,421.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,009.40 : 122,843.88 = 53,199.12 : x
  2. Step 2: Convert to fraction form
    89,009.40/122,843.88 = 53,199.12/x
  3. Step 3: Cross multiply
    89,009.40x = 122,843.88 × 53,199.12
  4. Step 4: Simplify right side
    89,009.40x = 6,535,186,313.39
  5. Step 5: Solve for x
    x = 6,535,186,313.39/89,009.40
  6. Step 6: Final answer
    x = 73,421.31

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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.