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Finding the Fourth Proportional to 85,757.51, 118,386.51 and 60,285.71

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Solution

The fourth proportional to 85,757.51, 118,386.51 and 60,285.71 is: 83,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,757.51 : 118,386.51 = 60,285.71 : x
  2. Step 2: Convert to fraction form
    85,757.51/118,386.51 = 60,285.71/x
  3. Step 3: Cross multiply
    85,757.51x = 118,386.51 × 60,285.71
  4. Step 4: Simplify right side
    85,757.51x = 7,137,014,217.84
  5. Step 5: Solve for x
    x = 7,137,014,217.84/85,757.51
  6. Step 6: Final answer
    x = 83,223.20

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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.