Home / 57,161.21-78,881.45-31,667.49

Finding the Fourth Proportional to 57,161.21, 78,881.45 and 31,667.49

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Solution

The fourth proportional to 57,161.21, 78,881.45 and 31,667.49 is: 43,700.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,161.21 : 78,881.45 = 31,667.49 : x
  2. Step 2: Convert to fraction form
    57,161.21/78,881.45 = 31,667.49/x
  3. Step 3: Cross multiply
    57,161.21x = 78,881.45 × 31,667.49
  4. Step 4: Simplify right side
    57,161.21x = 2,497,977,370.72
  5. Step 5: Solve for x
    x = 2,497,977,370.72/57,161.21
  6. Step 6: Final answer
    x = 43,700.57

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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.