Home / 53,043.90-79,448.30-30,802.11

Finding the Fourth Proportional to 53,043.90, 79,448.30 and 30,802.11

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Solution

The fourth proportional to 53,043.90, 79,448.30 and 30,802.11 is: 46,134.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,043.90 : 79,448.30 = 30,802.11 : x
  2. Step 2: Convert to fraction form
    53,043.90/79,448.30 = 30,802.11/x
  3. Step 3: Cross multiply
    53,043.90x = 79,448.30 × 30,802.11
  4. Step 4: Simplify right side
    53,043.90x = 2,447,175,121.90
  5. Step 5: Solve for x
    x = 2,447,175,121.90/53,043.90
  6. Step 6: Final answer
    x = 46,134.90

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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.