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Finding the Fourth Proportional to 85,551.47, 118,057.64 and 47,308.53

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Solution

The fourth proportional to 85,551.47, 118,057.64 and 47,308.53 is: 65,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,551.47 : 118,057.64 = 47,308.53 : x
  2. Step 2: Convert to fraction form
    85,551.47/118,057.64 = 47,308.53/x
  3. Step 3: Cross multiply
    85,551.47x = 118,057.64 × 47,308.53
  4. Step 4: Simplify right side
    85,551.47x = 5,585,133,167.13
  5. Step 5: Solve for x
    x = 5,585,133,167.13/85,551.47
  6. Step 6: Final answer
    x = 65,283.90

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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.