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Finding the Fourth Proportional to 85,587.96, 118,106.56 and 47,345.28

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Solution

The fourth proportional to 85,587.96, 118,106.56 and 47,345.28 is: 65,333.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,587.96 : 118,106.56 = 47,345.28 : x
  2. Step 2: Convert to fraction form
    85,587.96/118,106.56 = 47,345.28/x
  3. Step 3: Cross multiply
    85,587.96x = 118,106.56 × 47,345.28
  4. Step 4: Simplify right side
    85,587.96x = 5,591,788,153.04
  5. Step 5: Solve for x
    x = 5,591,788,153.04/85,587.96
  6. Step 6: Final answer
    x = 65,333.82

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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.