Home / 75,955.72-104,821.16-42,421

Finding the Fourth Proportional to 75,955.72, 104,821.16 and 42,421

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Solution

The fourth proportional to 75,955.72, 104,821.16 and 42,421 is: 58,542.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,955.72 : 104,821.16 = 42,421 : x
  2. Step 2: Convert to fraction form
    75,955.72/104,821.16 = 42,421/x
  3. Step 3: Cross multiply
    75,955.72x = 104,821.16 × 42,421
  4. Step 4: Simplify right side
    75,955.72x = 4,446,618,428.36
  5. Step 5: Solve for x
    x = 4,446,618,428.36/75,955.72
  6. Step 6: Final answer
    x = 58,542.25

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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.