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Finding the Fourth Proportional to 65,622.60, 98,433.90 and 43,315.20

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Solution

The fourth proportional to 65,622.60, 98,433.90 and 43,315.20 is: 64,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,622.60 : 98,433.90 = 43,315.20 : x
  2. Step 2: Convert to fraction form
    65,622.60/98,433.90 = 43,315.20/x
  3. Step 3: Cross multiply
    65,622.60x = 98,433.90 × 43,315.20
  4. Step 4: Simplify right side
    65,622.60x = 4,263,684,065.28
  5. Step 5: Solve for x
    x = 4,263,684,065.28/65,622.60
  6. Step 6: Final answer
    x = 64,972.80

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1.5x scale

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.