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Finding the Fourth Proportional to 85,386.96, 117,833.46 and 47,148.89

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Solution

The fourth proportional to 85,386.96, 117,833.46 and 47,148.89 is: 65,065.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,386.96 : 117,833.46 = 47,148.89 : x
  2. Step 2: Convert to fraction form
    85,386.96/117,833.46 = 47,148.89/x
  3. Step 3: Cross multiply
    85,386.96x = 117,833.46 × 47,148.89
  4. Step 4: Simplify right side
    85,386.96x = 5,555,716,843.86
  5. Step 5: Solve for x
    x = 5,555,716,843.86/85,386.96
  6. Step 6: Final answer
    x = 65,065.17

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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.