Home / 45,018.08-67,490.58-18,742.49

Finding the Fourth Proportional to 45,018.08, 67,490.58 and 18,742.49

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Solution

The fourth proportional to 45,018.08, 67,490.58 and 18,742.49 is: 28,098.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,018.08 : 67,490.58 = 18,742.49 : x
  2. Step 2: Convert to fraction form
    45,018.08/67,490.58 = 18,742.49/x
  3. Step 3: Cross multiply
    45,018.08x = 67,490.58 × 18,742.49
  4. Step 4: Simplify right side
    45,018.08x = 1,264,941,520.74
  5. Step 5: Solve for x
    x = 1,264,941,520.74/45,018.08
  6. Step 6: Final answer
    x = 28,098.52

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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.