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Finding the Fourth Proportional to 78,333.90, 108,101.70 and 44,339.42

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Solution

The fourth proportional to 78,333.90, 108,101.70 and 44,339.42 is: 61,188.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,333.90 : 108,101.70 = 44,339.42 : x
  2. Step 2: Convert to fraction form
    78,333.90/108,101.70 = 44,339.42/x
  3. Step 3: Cross multiply
    78,333.90x = 108,101.70 × 44,339.42
  4. Step 4: Simplify right side
    78,333.90x = 4,793,166,138.51
  5. Step 5: Solve for x
    x = 4,793,166,138.51/78,333.90
  6. Step 6: Final answer
    x = 61,188.91

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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.