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Finding the Fourth Proportional to 64,893.40, 97,145.70 and 38,584.60

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Solution

The fourth proportional to 64,893.40, 97,145.70 and 38,584.60 is: 57,761.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,893.40 : 97,145.70 = 38,584.60 : x
  2. Step 2: Convert to fraction form
    64,893.40/97,145.70 = 38,584.60/x
  3. Step 3: Cross multiply
    64,893.40x = 97,145.70 × 38,584.60
  4. Step 4: Simplify right side
    64,893.40x = 3,748,327,976.22
  5. Step 5: Solve for x
    x = 3,748,327,976.22/64,893.40
  6. Step 6: Final answer
    x = 57,761.31

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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.