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Finding the Fourth Proportional to 34,700.91, 47,887.89 and 20,370.99

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Solution

The fourth proportional to 34,700.91, 47,887.89 and 20,370.99 is: 28,112.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,700.91 : 47,887.89 = 20,370.99 : x
  2. Step 2: Convert to fraction form
    34,700.91/47,887.89 = 20,370.99/x
  3. Step 3: Cross multiply
    34,700.91x = 47,887.89 × 20,370.99
  4. Step 4: Simplify right side
    34,700.91x = 975,523,728.31
  5. Step 5: Solve for x
    x = 975,523,728.31/34,700.91
  6. Step 6: Final answer
    x = 28,112.34

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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.