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Finding the Fourth Proportional to 64,145.70, 96,218.55 and 57,256.65

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Solution

The fourth proportional to 64,145.70, 96,218.55 and 57,256.65 is: 85,884.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,145.70 : 96,218.55 = 57,256.65 : x
  2. Step 2: Convert to fraction form
    64,145.70/96,218.55 = 57,256.65/x
  3. Step 3: Cross multiply
    64,145.70x = 96,218.55 × 57,256.65
  4. Step 4: Simplify right side
    64,145.70x = 5,509,151,840.86
  5. Step 5: Solve for x
    x = 5,509,151,840.86/64,145.70
  6. Step 6: Final answer
    x = 85,884.98

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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.