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Finding the Fourth Proportional to 78,521.87, 108,379.43 and 44,550.25

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Solution

The fourth proportional to 78,521.87, 108,379.43 and 44,550.25 is: 61,490.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,521.87 : 108,379.43 = 44,550.25 : x
  2. Step 2: Convert to fraction form
    78,521.87/108,379.43 = 44,550.25/x
  3. Step 3: Cross multiply
    78,521.87x = 108,379.43 × 44,550.25
  4. Step 4: Simplify right side
    78,521.87x = 4,828,330,374.72
  5. Step 5: Solve for x
    x = 4,828,330,374.72/78,521.87
  6. Step 6: Final answer
    x = 61,490.26

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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.