Home / 79,090.61-109,145.04-43,280.62

Finding the Fourth Proportional to 79,090.61, 109,145.04 and 43,280.62

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Solution

The fourth proportional to 79,090.61, 109,145.04 and 43,280.62 is: 59,727.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,090.61 : 109,145.04 = 43,280.62 : x
  2. Step 2: Convert to fraction form
    79,090.61/109,145.04 = 43,280.62/x
  3. Step 3: Cross multiply
    79,090.61x = 109,145.04 × 43,280.62
  4. Step 4: Simplify right side
    79,090.61x = 4,723,864,565.96
  5. Step 5: Solve for x
    x = 4,723,864,565.96/79,090.61
  6. Step 6: Final answer
    x = 59,727.25

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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.