Home / 45,442.40-68,139.30-19,117.40

Finding the Fourth Proportional to 45,442.40, 68,139.30 and 19,117.40

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Solution

The fourth proportional to 45,442.40, 68,139.30 and 19,117.40 is: 28,665.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,442.40 : 68,139.30 = 19,117.40 : x
  2. Step 2: Convert to fraction form
    45,442.40/68,139.30 = 19,117.40/x
  3. Step 3: Cross multiply
    45,442.40x = 68,139.30 × 19,117.40
  4. Step 4: Simplify right side
    45,442.40x = 1,302,646,253.82
  5. Step 5: Solve for x
    x = 1,302,646,253.82/45,442.40
  6. Step 6: Final answer
    x = 28,665.88

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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.