Home / 52,148.32-78,221.54-12,705.34

Finding the Fourth Proportional to 52,148.32, 78,221.54 and 12,705.34

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Solution

The fourth proportional to 52,148.32, 78,221.54 and 12,705.34 is: 19,057.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,148.32 : 78,221.54 = 12,705.34 : x
  2. Step 2: Convert to fraction form
    52,148.32/78,221.54 = 12,705.34/x
  3. Step 3: Cross multiply
    52,148.32x = 78,221.54 × 12,705.34
  4. Step 4: Simplify right side
    52,148.32x = 993,831,261.02
  5. Step 5: Solve for x
    x = 993,831,261.02/52,148.32
  6. Step 6: Final answer
    x = 19,057.78

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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.