Home / 85,631.28-118,174.46-47,905.53

Finding the Fourth Proportional to 85,631.28, 118,174.46 and 47,905.53

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Solution

The fourth proportional to 85,631.28, 118,174.46 and 47,905.53 is: 66,111.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,631.28 : 118,174.46 = 47,905.53 : x
  2. Step 2: Convert to fraction form
    85,631.28/118,174.46 = 47,905.53/x
  3. Step 3: Cross multiply
    85,631.28x = 118,174.46 × 47,905.53
  4. Step 4: Simplify right side
    85,631.28x = 5,661,209,899.24
  5. Step 5: Solve for x
    x = 5,661,209,899.24/85,631.28
  6. Step 6: Final answer
    x = 66,111.47

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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.