Home / 86,090.20-118,811.90-50,291.72

Finding the Fourth Proportional to 86,090.20, 118,811.90 and 50,291.72

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Solution

The fourth proportional to 86,090.20, 118,811.90 and 50,291.72 is: 69,406.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,090.20 : 118,811.90 = 50,291.72 : x
  2. Step 2: Convert to fraction form
    86,090.20/118,811.90 = 50,291.72/x
  3. Step 3: Cross multiply
    86,090.20x = 118,811.90 × 50,291.72
  4. Step 4: Simplify right side
    86,090.20x = 5,975,254,807.47
  5. Step 5: Solve for x
    x = 5,975,254,807.47/86,090.20
  6. Step 6: Final answer
    x = 69,406.91

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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.