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Finding the Fourth Proportional to 64,471.40, 96,707.10 and 53,390.60

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Solution

The fourth proportional to 64,471.40, 96,707.10 and 53,390.60 is: 80,085.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,471.40 : 96,707.10 = 53,390.60 : x
  2. Step 2: Convert to fraction form
    64,471.40/96,707.10 = 53,390.60/x
  3. Step 3: Cross multiply
    64,471.40x = 96,707.10 × 53,390.60
  4. Step 4: Simplify right side
    64,471.40x = 5,163,250,093.26
  5. Step 5: Solve for x
    x = 5,163,250,093.26/64,471.40
  6. Step 6: Final answer
    x = 80,085.90

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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.