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Finding the Fourth Proportional to 85,959, 128,924.34 and 22,783.05

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Solution

The fourth proportional to 85,959, 128,924.34 and 22,783.05 is: 34,170.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,959 : 128,924.34 = 22,783.05 : x
  2. Step 2: Convert to fraction form
    85,959/128,924.34 = 22,783.05/x
  3. Step 3: Cross multiply
    85,959x = 128,924.34 × 22,783.05
  4. Step 4: Simplify right side
    85,959x = 2,937,289,684.44
  5. Step 5: Solve for x
    x = 2,937,289,684.44/85,959
  6. Step 6: Final answer
    x = 34,170.82

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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.