Home / 81,393.20-112,317.27-45,575

Finding the Fourth Proportional to 81,393.20, 112,317.27 and 45,575

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Solution

The fourth proportional to 81,393.20, 112,317.27 and 45,575 is: 62,890.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,393.20 : 112,317.27 = 45,575 : x
  2. Step 2: Convert to fraction form
    81,393.20/112,317.27 = 45,575/x
  3. Step 3: Cross multiply
    81,393.20x = 112,317.27 × 45,575
  4. Step 4: Simplify right side
    81,393.20x = 5,118,859,580.25
  5. Step 5: Solve for x
    x = 5,118,859,580.25/81,393.20
  6. Step 6: Final answer
    x = 62,890.51

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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.