Home / 42,715.49-64,078.36-17,772.41

Finding the Fourth Proportional to 42,715.49, 64,078.36 and 17,772.41

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Solution

The fourth proportional to 42,715.49, 64,078.36 and 17,772.41 is: 26,660.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,715.49 : 64,078.36 = 17,772.41 : x
  2. Step 2: Convert to fraction form
    42,715.49/64,078.36 = 17,772.41/x
  3. Step 3: Cross multiply
    42,715.49x = 64,078.36 × 17,772.41
  4. Step 4: Simplify right side
    42,715.49x = 1,138,827,001.81
  5. Step 5: Solve for x
    x = 1,138,827,001.81/42,715.49
  6. Step 6: Final answer
    x = 26,660.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.