Home / 64,887.98-97,349.27-20,515.56

Finding the Fourth Proportional to 64,887.98, 97,349.27 and 20,515.56

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Solution

The fourth proportional to 64,887.98, 97,349.27 and 20,515.56 is: 30,778.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,887.98 : 97,349.27 = 20,515.56 : x
  2. Step 2: Convert to fraction form
    64,887.98/97,349.27 = 20,515.56/x
  3. Step 3: Cross multiply
    64,887.98x = 97,349.27 × 20,515.56
  4. Step 4: Simplify right side
    64,887.98x = 1,997,174,687.06
  5. Step 5: Solve for x
    x = 1,997,174,687.06/64,887.98
  6. Step 6: Final answer
    x = 30,778.81

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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.