Home / 57,157.39-78,877.53-31,664.56

Finding the Fourth Proportional to 57,157.39, 78,877.53 and 31,664.56

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Solution

The fourth proportional to 57,157.39, 78,877.53 and 31,664.56 is: 43,697.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,157.39 : 78,877.53 = 31,664.56 : x
  2. Step 2: Convert to fraction form
    57,157.39/78,877.53 = 31,664.56/x
  3. Step 3: Cross multiply
    57,157.39x = 78,877.53 × 31,664.56
  4. Step 4: Simplify right side
    57,157.39x = 2,497,622,281.34
  5. Step 5: Solve for x
    x = 2,497,622,281.34/57,157.39
  6. Step 6: Final answer
    x = 43,697.28

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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.