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Finding the Fourth Proportional to 85,707.66, 118,237.32 and 55,502.71

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Solution

The fourth proportional to 85,707.66, 118,237.32 and 55,502.71 is: 76,568.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,707.66 : 118,237.32 = 55,502.71 : x
  2. Step 2: Convert to fraction form
    85,707.66/118,237.32 = 55,502.71/x
  3. Step 3: Cross multiply
    85,707.66x = 118,237.32 × 55,502.71
  4. Step 4: Simplify right side
    85,707.66x = 6,562,491,387.54
  5. Step 5: Solve for x
    x = 6,562,491,387.54/85,707.66
  6. Step 6: Final answer
    x = 76,568.32

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1.5x scale

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.