Home / 78,050.86-117,090.90-25,475.38

Finding the Fourth Proportional to 78,050.86, 117,090.90 and 25,475.38

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Solution

The fourth proportional to 78,050.86, 117,090.90 and 25,475.38 is: 38,217.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,050.86 : 117,090.90 = 25,475.38 : x
  2. Step 2: Convert to fraction form
    78,050.86/117,090.90 = 25,475.38/x
  3. Step 3: Cross multiply
    78,050.86x = 117,090.90 × 25,475.38
  4. Step 4: Simplify right side
    78,050.86x = 2,982,935,172.04
  5. Step 5: Solve for x
    x = 2,982,935,172.04/78,050.86
  6. Step 6: Final answer
    x = 38,217.84

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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.