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Finding the Fourth Proportional to 64,987.55, 97,480.53 and 20,614.68

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Solution

The fourth proportional to 64,987.55, 97,480.53 and 20,614.68 is: 30,921.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,987.55 : 97,480.53 = 20,614.68 : x
  2. Step 2: Convert to fraction form
    64,987.55/97,480.53 = 20,614.68/x
  3. Step 3: Cross multiply
    64,987.55x = 97,480.53 × 20,614.68
  4. Step 4: Simplify right side
    64,987.55x = 2,009,529,932.18
  5. Step 5: Solve for x
    x = 2,009,529,932.18/64,987.55
  6. Step 6: Final answer
    x = 30,921.77

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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.