Home / 81,152.96-121,726.24-36,779.52

Finding the Fourth Proportional to 81,152.96, 121,726.24 and 36,779.52

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Solution

The fourth proportional to 81,152.96, 121,726.24 and 36,779.52 is: 55,167.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,152.96 : 121,726.24 = 36,779.52 : x
  2. Step 2: Convert to fraction form
    81,152.96/121,726.24 = 36,779.52/x
  3. Step 3: Cross multiply
    81,152.96x = 121,726.24 × 36,779.52
  4. Step 4: Simplify right side
    81,152.96x = 4,477,032,678.60
  5. Step 5: Solve for x
    x = 4,477,032,678.60/81,152.96
  6. Step 6: Final answer
    x = 55,167.83

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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.