Home / 85,653.72-118,202.28-47,928

Finding the Fourth Proportional to 85,653.72, 118,202.28 and 47,928

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Solution

The fourth proportional to 85,653.72, 118,202.28 and 47,928 is: 66,140.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,653.72 : 118,202.28 = 47,928 : x
  2. Step 2: Convert to fraction form
    85,653.72/118,202.28 = 47,928/x
  3. Step 3: Cross multiply
    85,653.72x = 118,202.28 × 47,928
  4. Step 4: Simplify right side
    85,653.72x = 5,665,198,875.84
  5. Step 5: Solve for x
    x = 5,665,198,875.84/85,653.72
  6. Step 6: Final answer
    x = 66,140.72

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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.