Home / 47,623.20-65,721.60-28,756.56

Finding the Fourth Proportional to 47,623.20, 65,721.60 and 28,756.56

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Solution

The fourth proportional to 47,623.20, 65,721.60 and 28,756.56 is: 39,685.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,623.20 : 65,721.60 = 28,756.56 : x
  2. Step 2: Convert to fraction form
    47,623.20/65,721.60 = 28,756.56/x
  3. Step 3: Cross multiply
    47,623.20x = 65,721.60 × 28,756.56
  4. Step 4: Simplify right side
    47,623.20x = 1,889,927,133.70
  5. Step 5: Solve for x
    x = 1,889,927,133.70/47,623.20
  6. Step 6: Final answer
    x = 39,685.01

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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.