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Finding the Fourth Proportional to 85,920.69, 118,571.29 and 47,682.82

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Solution

The fourth proportional to 85,920.69, 118,571.29 and 47,682.82 is: 65,802.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,920.69 : 118,571.29 = 47,682.82 : x
  2. Step 2: Convert to fraction form
    85,920.69/118,571.29 = 47,682.82/x
  3. Step 3: Cross multiply
    85,920.69x = 118,571.29 × 47,682.82
  4. Step 4: Simplify right side
    85,920.69x = 5,653,813,062.60
  5. Step 5: Solve for x
    x = 5,653,813,062.60/85,920.69
  6. Step 6: Final answer
    x = 65,802.70

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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.