Home / 45,320.12-67,989.89-19,009.70

Finding the Fourth Proportional to 45,320.12, 67,989.89 and 19,009.70

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Solution

The fourth proportional to 45,320.12, 67,989.89 and 19,009.70 is: 28,518.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,320.12 : 67,989.89 = 19,009.70 : x
  2. Step 2: Convert to fraction form
    45,320.12/67,989.89 = 19,009.70/x
  3. Step 3: Cross multiply
    45,320.12x = 67,989.89 × 19,009.70
  4. Step 4: Simplify right side
    45,320.12x = 1,292,467,411.93
  5. Step 5: Solve for x
    x = 1,292,467,411.93/45,320.12
  6. Step 6: Final answer
    x = 28,518.62

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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.