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Finding the Fourth Proportional to 64,147.80, 96,223.90 and 19,774.20

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Solution

The fourth proportional to 64,147.80, 96,223.90 and 19,774.20 is: 29,661.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,147.80 : 96,223.90 = 19,774.20 : x
  2. Step 2: Convert to fraction form
    64,147.80/96,223.90 = 19,774.20/x
  3. Step 3: Cross multiply
    64,147.80x = 96,223.90 × 19,774.20
  4. Step 4: Simplify right side
    64,147.80x = 1,902,750,643.38
  5. Step 5: Solve for x
    x = 1,902,750,643.38/64,147.80
  6. Step 6: Final answer
    x = 29,661.98

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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.