Home / 81,513.72-112,486.28-45,215.01

Finding the Fourth Proportional to 81,513.72, 112,486.28 and 45,215.01

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Solution

The fourth proportional to 81,513.72, 112,486.28 and 45,215.01 is: 62,395.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,513.72 : 112,486.28 = 45,215.01 : x
  2. Step 2: Convert to fraction form
    81,513.72/112,486.28 = 45,215.01/x
  3. Step 3: Cross multiply
    81,513.72x = 112,486.28 × 45,215.01
  4. Step 4: Simplify right side
    81,513.72x = 5,086,068,048.99
  5. Step 5: Solve for x
    x = 5,086,068,048.99/81,513.72
  6. Step 6: Final answer
    x = 62,395.24

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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.