Home / 38,947.20-58,420.80-36,643.20

Finding the Fourth Proportional to 38,947.20, 58,420.80 and 36,643.20

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Solution

The fourth proportional to 38,947.20, 58,420.80 and 36,643.20 is: 54,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,947.20 : 58,420.80 = 36,643.20 : x
  2. Step 2: Convert to fraction form
    38,947.20/58,420.80 = 36,643.20/x
  3. Step 3: Cross multiply
    38,947.20x = 58,420.80 × 36,643.20
  4. Step 4: Simplify right side
    38,947.20x = 2,140,725,058.56
  5. Step 5: Solve for x
    x = 2,140,725,058.56/38,947.20
  6. Step 6: Final answer
    x = 54,964.80

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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.