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Finding the Fourth Proportional to 80,457.60, 120,144.60 and 65,695.32

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Solution

The fourth proportional to 80,457.60, 120,144.60 and 65,695.32 is: 98,100.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,457.60 : 120,144.60 = 65,695.32 : x
  2. Step 2: Convert to fraction form
    80,457.60/120,144.60 = 65,695.32/x
  3. Step 3: Cross multiply
    80,457.60x = 120,144.60 × 65,695.32
  4. Step 4: Simplify right side
    80,457.60x = 7,892,937,943.27
  5. Step 5: Solve for x
    x = 7,892,937,943.27/80,457.60
  6. Step 6: Final answer
    x = 98,100.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.