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Finding the Fourth Proportional to 85,853.86, 118,476.12 and 47,613.58

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Solution

The fourth proportional to 85,853.86, 118,476.12 and 47,613.58 is: 65,705.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,853.86 : 118,476.12 = 47,613.58 : x
  2. Step 2: Convert to fraction form
    85,853.86/118,476.12 = 47,613.58/x
  3. Step 3: Cross multiply
    85,853.86x = 118,476.12 × 47,613.58
  4. Step 4: Simplify right side
    85,853.86x = 5,641,072,217.71
  5. Step 5: Solve for x
    x = 5,641,072,217.71/85,853.86
  6. Step 6: Final answer
    x = 65,705.52

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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.