Home / 54,235.20-81,352.80-39,374.40

Finding the Fourth Proportional to 54,235.20, 81,352.80 and 39,374.40

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Solution

The fourth proportional to 54,235.20, 81,352.80 and 39,374.40 is: 59,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,235.20 : 81,352.80 = 39,374.40 : x
  2. Step 2: Convert to fraction form
    54,235.20/81,352.80 = 39,374.40/x
  3. Step 3: Cross multiply
    54,235.20x = 81,352.80 × 39,374.40
  4. Step 4: Simplify right side
    54,235.20x = 3,203,217,688.32
  5. Step 5: Solve for x
    x = 3,203,217,688.32/54,235.20
  6. Step 6: Final answer
    x = 59,061.60

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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.