Home / 42,905.30-64,042.35-39,896.96

Finding the Fourth Proportional to 42,905.30, 64,042.35 and 39,896.96

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Solution

The fourth proportional to 42,905.30, 64,042.35 and 39,896.96 is: 59,551.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,905.30 : 64,042.35 = 39,896.96 : x
  2. Step 2: Convert to fraction form
    42,905.30/64,042.35 = 39,896.96/x
  3. Step 3: Cross multiply
    42,905.30x = 64,042.35 × 39,896.96
  4. Step 4: Simplify right side
    42,905.30x = 2,555,094,606.43
  5. Step 5: Solve for x
    x = 2,555,094,606.43/42,905.30
  6. Step 6: Final answer
    x = 59,551.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.