Home / 54,219.20-81,328.80-37,630.40

Finding the Fourth Proportional to 54,219.20, 81,328.80 and 37,630.40

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Solution

The fourth proportional to 54,219.20, 81,328.80 and 37,630.40 is: 56,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,219.20 : 81,328.80 = 37,630.40 : x
  2. Step 2: Convert to fraction form
    54,219.20/81,328.80 = 37,630.40/x
  3. Step 3: Cross multiply
    54,219.20x = 81,328.80 × 37,630.40
  4. Step 4: Simplify right side
    54,219.20x = 3,060,435,275.52
  5. Step 5: Solve for x
    x = 3,060,435,275.52/54,219.20
  6. Step 6: Final answer
    x = 56,445.60

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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.