Home / 45,002.74-67,521.12-18,705.28

Finding the Fourth Proportional to 45,002.74, 67,521.12 and 18,705.28

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Solution

The fourth proportional to 45,002.74, 67,521.12 and 18,705.28 is: 28,064.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,002.74 : 67,521.12 = 18,705.28 : x
  2. Step 2: Convert to fraction form
    45,002.74/67,521.12 = 18,705.28/x
  3. Step 3: Cross multiply
    45,002.74x = 67,521.12 × 18,705.28
  4. Step 4: Simplify right side
    45,002.74x = 1,263,001,455.51
  5. Step 5: Solve for x
    x = 1,263,001,455.51/45,002.74
  6. Step 6: Final answer
    x = 28,064.99

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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.