Home / 54,742.20-82,113.30-19,685.40

Finding the Fourth Proportional to 54,742.20, 82,113.30 and 19,685.40

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Solution

The fourth proportional to 54,742.20, 82,113.30 and 19,685.40 is: 29,528.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,742.20 : 82,113.30 = 19,685.40 : x
  2. Step 2: Convert to fraction form
    54,742.20/82,113.30 = 19,685.40/x
  3. Step 3: Cross multiply
    54,742.20x = 82,113.30 × 19,685.40
  4. Step 4: Simplify right side
    54,742.20x = 1,616,433,155.82
  5. Step 5: Solve for x
    x = 1,616,433,155.82/54,742.20
  6. Step 6: Final answer
    x = 29,528.10

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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.