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Finding the Fourth Proportional to 72,900.90, 109,334.95 and 26,153.78

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Solution

The fourth proportional to 72,900.90, 109,334.95 and 26,153.78 is: 39,224.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,900.90 : 109,334.95 = 26,153.78 : x
  2. Step 2: Convert to fraction form
    72,900.90/109,334.95 = 26,153.78/x
  3. Step 3: Cross multiply
    72,900.90x = 109,334.95 × 26,153.78
  4. Step 4: Simplify right side
    72,900.90x = 2,859,521,616.55
  5. Step 5: Solve for x
    x = 2,859,521,616.55/72,900.90
  6. Step 6: Final answer
    x = 39,224.78

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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.