Home / 47,128.49-64,989.10-31,207.13

Finding the Fourth Proportional to 47,128.49, 64,989.10 and 31,207.13

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Solution

The fourth proportional to 47,128.49, 64,989.10 and 31,207.13 is: 43,033.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,128.49 : 64,989.10 = 31,207.13 : x
  2. Step 2: Convert to fraction form
    47,128.49/64,989.10 = 31,207.13/x
  3. Step 3: Cross multiply
    47,128.49x = 64,989.10 × 31,207.13
  4. Step 4: Simplify right side
    47,128.49x = 2,028,123,292.28
  5. Step 5: Solve for x
    x = 2,028,123,292.28/47,128.49
  6. Step 6: Final answer
    x = 43,033.91

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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.