Home / 47,845.17-66,019.30-28,720.89

Finding the Fourth Proportional to 47,845.17, 66,019.30 and 28,720.89

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Solution

The fourth proportional to 47,845.17, 66,019.30 and 28,720.89 is: 39,630.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,845.17 : 66,019.30 = 28,720.89 : x
  2. Step 2: Convert to fraction form
    47,845.17/66,019.30 = 28,720.89/x
  3. Step 3: Cross multiply
    47,845.17x = 66,019.30 × 28,720.89
  4. Step 4: Simplify right side
    47,845.17x = 1,896,133,053.18
  5. Step 5: Solve for x
    x = 1,896,133,053.18/47,845.17
  6. Step 6: Final answer
    x = 39,630.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.