Home / 78,133.65-117,147.14-37,585.76

Finding the Fourth Proportional to 78,133.65, 117,147.14 and 37,585.76

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Solution

The fourth proportional to 78,133.65, 117,147.14 and 37,585.76 is: 56,352.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,133.65 : 117,147.14 = 37,585.76 : x
  2. Step 2: Convert to fraction form
    78,133.65/117,147.14 = 37,585.76/x
  3. Step 3: Cross multiply
    78,133.65x = 117,147.14 × 37,585.76
  4. Step 4: Simplify right side
    78,133.65x = 4,403,063,515.06
  5. Step 5: Solve for x
    x = 4,403,063,515.06/78,133.65
  6. Step 6: Final answer
    x = 56,352.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.