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Finding the Fourth Proportional to 47,810.62, 65,961.03 and 28,940.86

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Solution

The fourth proportional to 47,810.62, 65,961.03 and 28,940.86 is: 39,927.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,810.62 : 65,961.03 = 28,940.86 : x
  2. Step 2: Convert to fraction form
    47,810.62/65,961.03 = 28,940.86/x
  3. Step 3: Cross multiply
    47,810.62x = 65,961.03 × 28,940.86
  4. Step 4: Simplify right side
    47,810.62x = 1,908,968,934.69
  5. Step 5: Solve for x
    x = 1,908,968,934.69/47,810.62
  6. Step 6: Final answer
    x = 39,927.72

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1.5x scale

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.