Home / 81,042.99-121,582.53-31,123.23

Finding the Fourth Proportional to 81,042.99, 121,582.53 and 31,123.23

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Solution

The fourth proportional to 81,042.99, 121,582.53 and 31,123.23 is: 46,691.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,042.99 : 121,582.53 = 31,123.23 : x
  2. Step 2: Convert to fraction form
    81,042.99/121,582.53 = 31,123.23/x
  3. Step 3: Cross multiply
    81,042.99x = 121,582.53 × 31,123.23
  4. Step 4: Simplify right side
    81,042.99x = 3,784,041,045.17
  5. Step 5: Solve for x
    x = 3,784,041,045.17/81,042.99
  6. Step 6: Final answer
    x = 46,691.77

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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.