Home / 81,429.93-112,385.17-45,622.36

Finding the Fourth Proportional to 81,429.93, 112,385.17 and 45,622.36

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Solution

The fourth proportional to 81,429.93, 112,385.17 and 45,622.36 is: 62,965.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,429.93 : 112,385.17 = 45,622.36 : x
  2. Step 2: Convert to fraction form
    81,429.93/112,385.17 = 45,622.36/x
  3. Step 3: Cross multiply
    81,429.93x = 112,385.17 × 45,622.36
  4. Step 4: Simplify right side
    81,429.93x = 5,127,276,881.91
  5. Step 5: Solve for x
    x = 5,127,276,881.91/81,429.93
  6. Step 6: Final answer
    x = 62,965.51

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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.