Home / 45,631.70-68,451.88-18,972.08

Finding the Fourth Proportional to 45,631.70, 68,451.88 and 18,972.08

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Solution

The fourth proportional to 45,631.70, 68,451.88 and 18,972.08 is: 28,459.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,631.70 : 68,451.88 = 18,972.08 : x
  2. Step 2: Convert to fraction form
    45,631.70/68,451.88 = 18,972.08/x
  3. Step 3: Cross multiply
    45,631.70x = 68,451.88 × 18,972.08
  4. Step 4: Simplify right side
    45,631.70x = 1,298,674,543.51
  5. Step 5: Solve for x
    x = 1,298,674,543.51/45,631.70
  6. Step 6: Final answer
    x = 28,459.92

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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.