Home / 100,577.76-138,825.23-57,581.34

Finding the Fourth Proportional to 100,577.76, 138,825.23 and 57,581.34

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Solution

The fourth proportional to 100,577.76, 138,825.23 and 57,581.34 is: 79,478.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,577.76 : 138,825.23 = 57,581.34 : x
  2. Step 2: Convert to fraction form
    100,577.76/138,825.23 = 57,581.34/x
  3. Step 3: Cross multiply
    100,577.76x = 138,825.23 × 57,581.34
  4. Step 4: Simplify right side
    100,577.76x = 7,993,742,769.21
  5. Step 5: Solve for x
    x = 7,993,742,769.21/100,577.76
  6. Step 6: Final answer
    x = 79,478.23

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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.