Home / 78,002.90-117,004.35-38,566.10

Finding the Fourth Proportional to 78,002.90, 117,004.35 and 38,566.10

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Solution

The fourth proportional to 78,002.90, 117,004.35 and 38,566.10 is: 57,849.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,002.90 : 117,004.35 = 38,566.10 : x
  2. Step 2: Convert to fraction form
    78,002.90/117,004.35 = 38,566.10/x
  3. Step 3: Cross multiply
    78,002.90x = 117,004.35 × 38,566.10
  4. Step 4: Simplify right side
    78,002.90x = 4,512,401,462.54
  5. Step 5: Solve for x
    x = 4,512,401,462.54/78,002.90
  6. Step 6: Final answer
    x = 57,849.15

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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.