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Finding the Fourth Proportional to 87,608.93, 120,904.79 and 53,606.75

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Solution

The fourth proportional to 87,608.93, 120,904.79 and 53,606.75 is: 73,980.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,608.93 : 120,904.79 = 53,606.75 : x
  2. Step 2: Convert to fraction form
    87,608.93/120,904.79 = 53,606.75/x
  3. Step 3: Cross multiply
    87,608.93x = 120,904.79 × 53,606.75
  4. Step 4: Simplify right side
    87,608.93x = 6,481,312,851.33
  5. Step 5: Solve for x
    x = 6,481,312,851.33/87,608.93
  6. Step 6: Final answer
    x = 73,980.05

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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.