Home / 85,607.31-118,138.50-47,881.56

Finding the Fourth Proportional to 85,607.31, 118,138.50 and 47,881.56

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Solution

The fourth proportional to 85,607.31, 118,138.50 and 47,881.56 is: 66,076.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,607.31 : 118,138.50 = 47,881.56 : x
  2. Step 2: Convert to fraction form
    85,607.31/118,138.50 = 47,881.56/x
  3. Step 3: Cross multiply
    85,607.31x = 118,138.50 × 47,881.56
  4. Step 4: Simplify right side
    85,607.31x = 5,656,655,676.06
  5. Step 5: Solve for x
    x = 5,656,655,676.06/85,607.31
  6. Step 6: Final answer
    x = 66,076.78

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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.