Home / 45,986.40-68,966.64-19,719.72

Finding the Fourth Proportional to 45,986.40, 68,966.64 and 19,719.72

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Solution

The fourth proportional to 45,986.40, 68,966.64 and 19,719.72 is: 29,574.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,986.40 : 68,966.64 = 19,719.72 : x
  2. Step 2: Convert to fraction form
    45,986.40/68,966.64 = 19,719.72/x
  3. Step 3: Cross multiply
    45,986.40x = 68,966.64 × 19,719.72
  4. Step 4: Simplify right side
    45,986.40x = 1,360,002,830.14
  5. Step 5: Solve for x
    x = 1,360,002,830.14/45,986.40
  6. Step 6: Final answer
    x = 29,574.02

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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.