Home / 74,635.85-102,888.65-56,699.72

Finding the Fourth Proportional to 74,635.85, 102,888.65 and 56,699.72

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Solution

The fourth proportional to 74,635.85, 102,888.65 and 56,699.72 is: 78,162.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,635.85 : 102,888.65 = 56,699.72 : x
  2. Step 2: Convert to fraction form
    74,635.85/102,888.65 = 56,699.72/x
  3. Step 3: Cross multiply
    74,635.85x = 102,888.65 × 56,699.72
  4. Step 4: Simplify right side
    74,635.85x = 5,833,757,273.48
  5. Step 5: Solve for x
    x = 5,833,757,273.48/74,635.85
  6. Step 6: Final answer
    x = 78,162.94

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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.