Home / 42,702.68-64,093.20-21,657.36

Finding the Fourth Proportional to 42,702.68, 64,093.20 and 21,657.36

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Solution

The fourth proportional to 42,702.68, 64,093.20 and 21,657.36 is: 32,505.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,702.68 : 64,093.20 = 21,657.36 : x
  2. Step 2: Convert to fraction form
    42,702.68/64,093.20 = 21,657.36/x
  3. Step 3: Cross multiply
    42,702.68x = 64,093.20 × 21,657.36
  4. Step 4: Simplify right side
    42,702.68x = 1,388,089,505.95
  5. Step 5: Solve for x
    x = 1,388,089,505.95/42,702.68
  6. Step 6: Final answer
    x = 32,505.91

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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.