Home / 64,749.09-97,123.49-20,379.72

Finding the Fourth Proportional to 64,749.09, 97,123.49 and 20,379.72

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Solution

The fourth proportional to 64,749.09, 97,123.49 and 20,379.72 is: 30,569.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,749.09 : 97,123.49 = 20,379.72 : x
  2. Step 2: Convert to fraction form
    64,749.09/97,123.49 = 20,379.72/x
  3. Step 3: Cross multiply
    64,749.09x = 97,123.49 × 20,379.72
  4. Step 4: Simplify right side
    64,749.09x = 1,979,349,429.72
  5. Step 5: Solve for x
    x = 1,979,349,429.72/64,749.09
  6. Step 6: Final answer
    x = 30,569.53

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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.