Home / 65,746.20-98,619.30-21,374.40

Finding the Fourth Proportional to 65,746.20, 98,619.30 and 21,374.40

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Solution

The fourth proportional to 65,746.20, 98,619.30 and 21,374.40 is: 32,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,746.20 : 98,619.30 = 21,374.40 : x
  2. Step 2: Convert to fraction form
    65,746.20/98,619.30 = 21,374.40/x
  3. Step 3: Cross multiply
    65,746.20x = 98,619.30 × 21,374.40
  4. Step 4: Simplify right side
    65,746.20x = 2,107,928,365.92
  5. Step 5: Solve for x
    x = 2,107,928,365.92/65,746.20
  6. Step 6: Final answer
    x = 32,061.60

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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.