Home / 74,458.14-102,779.28-49,315.74

Finding the Fourth Proportional to 74,458.14, 102,779.28 and 49,315.74

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Solution

The fourth proportional to 74,458.14, 102,779.28 and 49,315.74 is: 68,073.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,458.14 : 102,779.28 = 49,315.74 : x
  2. Step 2: Convert to fraction form
    74,458.14/102,779.28 = 49,315.74/x
  3. Step 3: Cross multiply
    74,458.14x = 102,779.28 × 49,315.74
  4. Step 4: Simplify right side
    74,458.14x = 5,068,636,249.87
  5. Step 5: Solve for x
    x = 5,068,636,249.87/74,458.14
  6. Step 6: Final answer
    x = 68,073.64

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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.