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Finding the Fourth Proportional to 57,874.88, 86,823.84 and 18,430.72

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Solution

The fourth proportional to 57,874.88, 86,823.84 and 18,430.72 is: 27,649.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,874.88 : 86,823.84 = 18,430.72 : x
  2. Step 2: Convert to fraction form
    57,874.88/86,823.84 = 18,430.72/x
  3. Step 3: Cross multiply
    57,874.88x = 86,823.84 × 18,430.72
  4. Step 4: Simplify right side
    57,874.88x = 1,600,225,884.36
  5. Step 5: Solve for x
    x = 1,600,225,884.36/57,874.88
  6. Step 6: Final answer
    x = 27,649.75

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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.