Home / 85,345.40-117,776.58-47,619.65

Finding the Fourth Proportional to 85,345.40, 117,776.58 and 47,619.65

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Solution

The fourth proportional to 85,345.40, 117,776.58 and 47,619.65 is: 65,715.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,345.40 : 117,776.58 = 47,619.65 : x
  2. Step 2: Convert to fraction form
    85,345.40/117,776.58 = 47,619.65/x
  3. Step 3: Cross multiply
    85,345.40x = 117,776.58 × 47,619.65
  4. Step 4: Simplify right side
    85,345.40x = 5,608,479,901.53
  5. Step 5: Solve for x
    x = 5,608,479,901.53/85,345.40
  6. Step 6: Final answer
    x = 65,715.08

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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.