Home / 86,506.34-119,382.84-48,779.78

Finding the Fourth Proportional to 86,506.34, 119,382.84 and 48,779.78

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Solution

The fourth proportional to 86,506.34, 119,382.84 and 48,779.78 is: 67,318.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,506.34 : 119,382.84 = 48,779.78 : x
  2. Step 2: Convert to fraction form
    86,506.34/119,382.84 = 48,779.78/x
  3. Step 3: Cross multiply
    86,506.34x = 119,382.84 × 48,779.78
  4. Step 4: Simplify right side
    86,506.34x = 5,823,468,670.98
  5. Step 5: Solve for x
    x = 5,823,468,670.98/86,506.34
  6. Step 6: Final answer
    x = 67,318.40

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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.