Home / 81,558.86-112,499.40-58,931.08

Finding the Fourth Proportional to 81,558.86, 112,499.40 and 58,931.08

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Solution

The fourth proportional to 81,558.86, 112,499.40 and 58,931.08 is: 81,287.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,558.86 : 112,499.40 = 58,931.08 : x
  2. Step 2: Convert to fraction form
    81,558.86/112,499.40 = 58,931.08/x
  3. Step 3: Cross multiply
    81,558.86x = 112,499.40 × 58,931.08
  4. Step 4: Simplify right side
    81,558.86x = 6,629,711,141.35
  5. Step 5: Solve for x
    x = 6,629,711,141.35/81,558.86
  6. Step 6: Final answer
    x = 81,287.44

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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.