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Finding the Fourth Proportional to 64,492.80, 96,739.20 and 53,433.60

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Solution

The fourth proportional to 64,492.80, 96,739.20 and 53,433.60 is: 80,150.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,492.80 : 96,739.20 = 53,433.60 : x
  2. Step 2: Convert to fraction form
    64,492.80/96,739.20 = 53,433.60/x
  3. Step 3: Cross multiply
    64,492.80x = 96,739.20 × 53,433.60
  4. Step 4: Simplify right side
    64,492.80x = 5,169,123,717.12
  5. Step 5: Solve for x
    x = 5,169,123,717.12/64,492.80
  6. Step 6: Final answer
    x = 80,150.40

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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.