Home / 42,750.26-64,138.35-20,557.34

Finding the Fourth Proportional to 42,750.26, 64,138.35 and 20,557.34

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Solution

The fourth proportional to 42,750.26, 64,138.35 and 20,557.34 is: 30,842.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,750.26 : 64,138.35 = 20,557.34 : x
  2. Step 2: Convert to fraction form
    42,750.26/64,138.35 = 20,557.34/x
  3. Step 3: Cross multiply
    42,750.26x = 64,138.35 × 20,557.34
  4. Step 4: Simplify right side
    42,750.26x = 1,318,513,867.99
  5. Step 5: Solve for x
    x = 1,318,513,867.99/42,750.26
  6. Step 6: Final answer
    x = 30,842.24

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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.