Home / 81,445.25-122,202.74-42,030.05

Finding the Fourth Proportional to 81,445.25, 122,202.74 and 42,030.05

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Solution

The fourth proportional to 81,445.25, 122,202.74 and 42,030.05 is: 63,063.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,445.25 : 122,202.74 = 42,030.05 : x
  2. Step 2: Convert to fraction form
    81,445.25/122,202.74 = 42,030.05/x
  3. Step 3: Cross multiply
    81,445.25x = 122,202.74 × 42,030.05
  4. Step 4: Simplify right side
    81,445.25x = 5,136,186,766.40
  5. Step 5: Solve for x
    x = 5,136,186,766.40/81,445.25
  6. Step 6: Final answer
    x = 63,063.06

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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.