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Finding the Fourth Proportional to 47,285.77, 70,945.59 and 20,256.77

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Solution

The fourth proportional to 47,285.77, 70,945.59 and 20,256.77 is: 30,392.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,285.77 : 70,945.59 = 20,256.77 : x
  2. Step 2: Convert to fraction form
    47,285.77/70,945.59 = 20,256.77/x
  3. Step 3: Cross multiply
    47,285.77x = 70,945.59 × 20,256.77
  4. Step 4: Simplify right side
    47,285.77x = 1,437,128,476.97
  5. Step 5: Solve for x
    x = 1,437,128,476.97/47,285.77
  6. Step 6: Final answer
    x = 30,392.41

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1.5x scale

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.