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Finding the Fourth Proportional to 64,868.40, 97,086.60 and 47,048.40

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Solution

The fourth proportional to 64,868.40, 97,086.60 and 47,048.40 is: 70,415.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,868.40 : 97,086.60 = 47,048.40 : x
  2. Step 2: Convert to fraction form
    64,868.40/97,086.60 = 47,048.40/x
  3. Step 3: Cross multiply
    64,868.40x = 97,086.60 × 47,048.40
  4. Step 4: Simplify right side
    64,868.40x = 4,567,769,191.44
  5. Step 5: Solve for x
    x = 4,567,769,191.44/64,868.40
  6. Step 6: Final answer
    x = 70,415.94

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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.