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Finding the Fourth Proportional to 64,973.56, 97,472.63 and 20,611.48

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Solution

The fourth proportional to 64,973.56, 97,472.63 and 20,611.48 is: 30,921.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,973.56 : 97,472.63 = 20,611.48 : x
  2. Step 2: Convert to fraction form
    64,973.56/97,472.63 = 20,611.48/x
  3. Step 3: Cross multiply
    64,973.56x = 97,472.63 × 20,611.48
  4. Step 4: Simplify right side
    64,973.56x = 2,009,055,163.79
  5. Step 5: Solve for x
    x = 2,009,055,163.79/64,973.56
  6. Step 6: Final answer
    x = 30,921.12

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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.