Home / 47,287.52-70,906.32-20,980.80

Finding the Fourth Proportional to 47,287.52, 70,906.32 and 20,980.80

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Solution

The fourth proportional to 47,287.52, 70,906.32 and 20,980.80 is: 31,460.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,287.52 : 70,906.32 = 20,980.80 : x
  2. Step 2: Convert to fraction form
    47,287.52/70,906.32 = 20,980.80/x
  3. Step 3: Cross multiply
    47,287.52x = 70,906.32 × 20,980.80
  4. Step 4: Simplify right side
    47,287.52x = 1,487,671,318.66
  5. Step 5: Solve for x
    x = 1,487,671,318.66/47,287.52
  6. Step 6: Final answer
    x = 31,460.13

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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.