Home / 45,354.20-68,031.30-31,357.40

Finding the Fourth Proportional to 45,354.20, 68,031.30 and 31,357.40

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Solution

The fourth proportional to 45,354.20, 68,031.30 and 31,357.40 is: 47,036.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,354.20 : 68,031.30 = 31,357.40 : x
  2. Step 2: Convert to fraction form
    45,354.20/68,031.30 = 31,357.40/x
  3. Step 3: Cross multiply
    45,354.20x = 68,031.30 × 31,357.40
  4. Step 4: Simplify right side
    45,354.20x = 2,133,284,686.62
  5. Step 5: Solve for x
    x = 2,133,284,686.62/45,354.20
  6. Step 6: Final answer
    x = 47,036.10

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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.