Home / 81,051.08-121,582.77-21,885.89

Finding the Fourth Proportional to 81,051.08, 121,582.77 and 21,885.89

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Solution

The fourth proportional to 81,051.08, 121,582.77 and 21,885.89 is: 32,830.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,051.08 : 121,582.77 = 21,885.89 : x
  2. Step 2: Convert to fraction form
    81,051.08/121,582.77 = 21,885.89/x
  3. Step 3: Cross multiply
    81,051.08x = 121,582.77 × 21,885.89
  4. Step 4: Simplify right side
    81,051.08x = 2,660,947,130.12
  5. Step 5: Solve for x
    x = 2,660,947,130.12/81,051.08
  6. Step 6: Final answer
    x = 32,830.50

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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.