Home / 54,427.40-81,641.10-40,430.60

Finding the Fourth Proportional to 54,427.40, 81,641.10 and 40,430.60

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Solution

The fourth proportional to 54,427.40, 81,641.10 and 40,430.60 is: 60,645.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,427.40 : 81,641.10 = 40,430.60 : x
  2. Step 2: Convert to fraction form
    54,427.40/81,641.10 = 40,430.60/x
  3. Step 3: Cross multiply
    54,427.40x = 81,641.10 × 40,430.60
  4. Step 4: Simplify right side
    54,427.40x = 3,300,798,657.66
  5. Step 5: Solve for x
    x = 3,300,798,657.66/54,427.40
  6. Step 6: Final answer
    x = 60,645.90

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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.