Home / 53,148.96-79,730.40-18,079.20

Finding the Fourth Proportional to 53,148.96, 79,730.40 and 18,079.20

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Solution

The fourth proportional to 53,148.96, 79,730.40 and 18,079.20 is: 27,121.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,148.96 : 79,730.40 = 18,079.20 : x
  2. Step 2: Convert to fraction form
    53,148.96/79,730.40 = 18,079.20/x
  3. Step 3: Cross multiply
    53,148.96x = 79,730.40 × 18,079.20
  4. Step 4: Simplify right side
    53,148.96x = 1,441,461,847.68
  5. Step 5: Solve for x
    x = 1,441,461,847.68/53,148.96
  6. Step 6: Final answer
    x = 27,121.17

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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.