Home / 42,705.28-64,059.54-11,540.53

Finding the Fourth Proportional to 42,705.28, 64,059.54 and 11,540.53

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Solution

The fourth proportional to 42,705.28, 64,059.54 and 11,540.53 is: 17,311.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,705.28 : 64,059.54 = 11,540.53 : x
  2. Step 2: Convert to fraction form
    42,705.28/64,059.54 = 11,540.53/x
  3. Step 3: Cross multiply
    42,705.28x = 64,059.54 × 11,540.53
  4. Step 4: Simplify right side
    42,705.28x = 739,281,043.16
  5. Step 5: Solve for x
    x = 739,281,043.16/42,705.28
  6. Step 6: Final answer
    x = 17,311.23

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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.