Home / 53,139.66-79,720.56-28,172.93

Finding the Fourth Proportional to 53,139.66, 79,720.56 and 28,172.93

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Solution

The fourth proportional to 53,139.66, 79,720.56 and 28,172.93 is: 42,265.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,139.66 : 79,720.56 = 28,172.93 : x
  2. Step 2: Convert to fraction form
    53,139.66/79,720.56 = 28,172.93/x
  3. Step 3: Cross multiply
    53,139.66x = 79,720.56 × 28,172.93
  4. Step 4: Simplify right side
    53,139.66x = 2,245,961,357.84
  5. Step 5: Solve for x
    x = 2,245,961,357.84/53,139.66
  6. Step 6: Final answer
    x = 42,265.26

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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.