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Finding the Fourth Proportional to 34,703.40, 47,971.40 and 30,963.63

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Solution

The fourth proportional to 34,703.40, 47,971.40 and 30,963.63 is: 42,801.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,703.40 : 47,971.40 = 30,963.63 : x
  2. Step 2: Convert to fraction form
    34,703.40/47,971.40 = 30,963.63/x
  3. Step 3: Cross multiply
    34,703.40x = 47,971.40 × 30,963.63
  4. Step 4: Simplify right side
    34,703.40x = 1,485,368,680.18
  5. Step 5: Solve for x
    x = 1,485,368,680.18/34,703.40
  6. Step 6: Final answer
    x = 42,801.82

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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.