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Finding the Fourth Proportional to 73,779.22, 110,669.51 and 21,188.71

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Solution

The fourth proportional to 73,779.22, 110,669.51 and 21,188.71 is: 31,783.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,779.22 : 110,669.51 = 21,188.71 : x
  2. Step 2: Convert to fraction form
    73,779.22/110,669.51 = 21,188.71/x
  3. Step 3: Cross multiply
    73,779.22x = 110,669.51 × 21,188.71
  4. Step 4: Simplify right side
    73,779.22x = 2,344,944,153.23
  5. Step 5: Solve for x
    x = 2,344,944,153.23/73,779.22
  6. Step 6: Final answer
    x = 31,783.26

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1.5x scale

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.