Home / 85,507.56-118,000.38-47,781.72

Finding the Fourth Proportional to 85,507.56, 118,000.38 and 47,781.72

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Solution

The fourth proportional to 85,507.56, 118,000.38 and 47,781.72 is: 65,938.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,507.56 : 118,000.38 = 47,781.72 : x
  2. Step 2: Convert to fraction form
    85,507.56/118,000.38 = 47,781.72/x
  3. Step 3: Cross multiply
    85,507.56x = 118,000.38 × 47,781.72
  4. Step 4: Simplify right side
    85,507.56x = 5,638,261,117.05
  5. Step 5: Solve for x
    x = 5,638,261,117.05/85,507.56
  6. Step 6: Final answer
    x = 65,938.74

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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.