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Finding the Fourth Proportional to 71,630.45, 107,445.55 and 19,039.93

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Solution

The fourth proportional to 71,630.45, 107,445.55 and 19,039.93 is: 28,559.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,630.45 : 107,445.55 = 19,039.93 : x
  2. Step 2: Convert to fraction form
    71,630.45/107,445.55 = 19,039.93/x
  3. Step 3: Cross multiply
    71,630.45x = 107,445.55 × 19,039.93
  4. Step 4: Simplify right side
    71,630.45x = 2,045,755,750.81
  5. Step 5: Solve for x
    x = 2,045,755,750.81/71,630.45
  6. Step 6: Final answer
    x = 28,559.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.