Home / 77,779.15-116,642.76-30,381.94

Finding the Fourth Proportional to 77,779.15, 116,642.76 and 30,381.94

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Solution

The fourth proportional to 77,779.15, 116,642.76 and 30,381.94 is: 45,562.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,779.15 : 116,642.76 = 30,381.94 : x
  2. Step 2: Convert to fraction form
    77,779.15/116,642.76 = 30,381.94/x
  3. Step 3: Cross multiply
    77,779.15x = 116,642.76 × 30,381.94
  4. Step 4: Simplify right side
    77,779.15x = 3,543,833,335.75
  5. Step 5: Solve for x
    x = 3,543,833,335.75/77,779.15
  6. Step 6: Final answer
    x = 45,562.77

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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.