Home / 42,720.24-64,035-25,198.32

Finding the Fourth Proportional to 42,720.24, 64,035 and 25,198.32

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Solution

The fourth proportional to 42,720.24, 64,035 and 25,198.32 is: 37,770.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,720.24 : 64,035 = 25,198.32 : x
  2. Step 2: Convert to fraction form
    42,720.24/64,035 = 25,198.32/x
  3. Step 3: Cross multiply
    42,720.24x = 64,035 × 25,198.32
  4. Step 4: Simplify right side
    42,720.24x = 1,613,574,421.20
  5. Step 5: Solve for x
    x = 1,613,574,421.20/42,720.24
  6. Step 6: Final answer
    x = 37,770.72

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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.