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Finding the Fourth Proportional to 64,963.20, 97,444.80 and 31,704.60

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Solution

The fourth proportional to 64,963.20, 97,444.80 and 31,704.60 is: 47,556.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,963.20 : 97,444.80 = 31,704.60 : x
  2. Step 2: Convert to fraction form
    64,963.20/97,444.80 = 31,704.60/x
  3. Step 3: Cross multiply
    64,963.20x = 97,444.80 × 31,704.60
  4. Step 4: Simplify right side
    64,963.20x = 3,089,448,406.08
  5. Step 5: Solve for x
    x = 3,089,448,406.08/64,963.20
  6. Step 6: Final answer
    x = 47,556.90

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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.