Home / 55,358-82,981.49-28,689.05

Finding the Fourth Proportional to 55,358, 82,981.49 and 28,689.05

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Solution

The fourth proportional to 55,358, 82,981.49 and 28,689.05 is: 43,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,358 : 82,981.49 = 28,689.05 : x
  2. Step 2: Convert to fraction form
    55,358/82,981.49 = 28,689.05/x
  3. Step 3: Cross multiply
    55,358x = 82,981.49 × 28,689.05
  4. Step 4: Simplify right side
    55,358x = 2,380,659,972.24
  5. Step 5: Solve for x
    x = 2,380,659,972.24/55,358
  6. Step 6: Final answer
    x = 43,004.80

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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.