Home / 85,614.54-118,141.64-47,881.50

Finding the Fourth Proportional to 85,614.54, 118,141.64 and 47,881.50

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Solution

The fourth proportional to 85,614.54, 118,141.64 and 47,881.50 is: 66,072.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,614.54 : 118,141.64 = 47,881.50 : x
  2. Step 2: Convert to fraction form
    85,614.54/118,141.64 = 47,881.50/x
  3. Step 3: Cross multiply
    85,614.54x = 118,141.64 × 47,881.50
  4. Step 4: Simplify right side
    85,614.54x = 5,656,798,935.66
  5. Step 5: Solve for x
    x = 5,656,798,935.66/85,614.54
  6. Step 6: Final answer
    x = 66,072.88

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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.