Home / 67,379.76-92,977.80-65,115

Finding the Fourth Proportional to 67,379.76, 92,977.80 and 65,115

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Solution

The fourth proportional to 67,379.76, 92,977.80 and 65,115 is: 89,852.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,379.76 : 92,977.80 = 65,115 : x
  2. Step 2: Convert to fraction form
    67,379.76/92,977.80 = 65,115/x
  3. Step 3: Cross multiply
    67,379.76x = 92,977.80 × 65,115
  4. Step 4: Simplify right side
    67,379.76x = 6,054,249,447
  5. Step 5: Solve for x
    x = 6,054,249,447/67,379.76
  6. Step 6: Final answer
    x = 89,852.64

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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.