Home / 42,845.42-64,281.27-19,172.90

Finding the Fourth Proportional to 42,845.42, 64,281.27 and 19,172.90

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Solution

The fourth proportional to 42,845.42, 64,281.27 and 19,172.90 is: 28,765.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,845.42 : 64,281.27 = 19,172.90 : x
  2. Step 2: Convert to fraction form
    42,845.42/64,281.27 = 19,172.90/x
  3. Step 3: Cross multiply
    42,845.42x = 64,281.27 × 19,172.90
  4. Step 4: Simplify right side
    42,845.42x = 1,232,458,594.18
  5. Step 5: Solve for x
    x = 1,232,458,594.18/42,845.42
  6. Step 6: Final answer
    x = 28,765.23

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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.