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Finding the Fourth Proportional to 72,024.80, 107,972.40 and 47,076.80

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Solution

The fourth proportional to 72,024.80, 107,972.40 and 47,076.80 is: 70,572.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,024.80 : 107,972.40 = 47,076.80 : x
  2. Step 2: Convert to fraction form
    72,024.80/107,972.40 = 47,076.80/x
  3. Step 3: Cross multiply
    72,024.80x = 107,972.40 × 47,076.80
  4. Step 4: Simplify right side
    72,024.80x = 5,082,995,080.32
  5. Step 5: Solve for x
    x = 5,082,995,080.32/72,024.80
  6. Step 6: Final answer
    x = 70,572.85

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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.