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Finding the Fourth Proportional to 72,160.50, 108,240.48 and 19,569.90

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Solution

The fourth proportional to 72,160.50, 108,240.48 and 19,569.90 is: 29,354.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,160.50 : 108,240.48 = 19,569.90 : x
  2. Step 2: Convert to fraction form
    72,160.50/108,240.48 = 19,569.90/x
  3. Step 3: Cross multiply
    72,160.50x = 108,240.48 × 19,569.90
  4. Step 4: Simplify right side
    72,160.50x = 2,118,255,369.55
  5. Step 5: Solve for x
    x = 2,118,255,369.55/72,160.50
  6. Step 6: Final answer
    x = 29,354.78

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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.