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Finding the Fourth Proportional to 58,779.03, 81,115.04 and 31,921.55

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Solution

The fourth proportional to 58,779.03, 81,115.04 and 31,921.55 is: 44,051.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,779.03 : 81,115.04 = 31,921.55 : x
  2. Step 2: Convert to fraction form
    58,779.03/81,115.04 = 31,921.55/x
  3. Step 3: Cross multiply
    58,779.03x = 81,115.04 × 31,921.55
  4. Step 4: Simplify right side
    58,779.03x = 2,589,317,479.34
  5. Step 5: Solve for x
    x = 2,589,317,479.34/58,779.03
  6. Step 6: Final answer
    x = 44,051.72

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1.5x scale

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.