Home / 42,538.14-63,742.54-20,320.92

Finding the Fourth Proportional to 42,538.14, 63,742.54 and 20,320.92

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Solution

The fourth proportional to 42,538.14, 63,742.54 and 20,320.92 is: 30,450.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,538.14 : 63,742.54 = 20,320.92 : x
  2. Step 2: Convert to fraction form
    42,538.14/63,742.54 = 20,320.92/x
  3. Step 3: Cross multiply
    42,538.14x = 63,742.54 × 20,320.92
  4. Step 4: Simplify right side
    42,538.14x = 1,295,307,055.94
  5. Step 5: Solve for x
    x = 1,295,307,055.94/42,538.14
  6. Step 6: Final answer
    x = 30,450.49

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1.5x scale

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.