Home / 45,427.40-68,116.80-19,102.40

Finding the Fourth Proportional to 45,427.40, 68,116.80 and 19,102.40

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Solution

The fourth proportional to 45,427.40, 68,116.80 and 19,102.40 is: 28,643.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,427.40 : 68,116.80 = 19,102.40 : x
  2. Step 2: Convert to fraction form
    45,427.40/68,116.80 = 19,102.40/x
  3. Step 3: Cross multiply
    45,427.40x = 68,116.80 × 19,102.40
  4. Step 4: Simplify right side
    45,427.40x = 1,301,194,360.32
  5. Step 5: Solve for x
    x = 1,301,194,360.32/45,427.40
  6. Step 6: Final answer
    x = 28,643.38

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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.