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Finding the Fourth Proportional to 64,019.70, 96,018.48 and 28,951.20

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Solution

The fourth proportional to 64,019.70, 96,018.48 and 28,951.20 is: 43,421.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,019.70 : 96,018.48 = 28,951.20 : x
  2. Step 2: Convert to fraction form
    64,019.70/96,018.48 = 28,951.20/x
  3. Step 3: Cross multiply
    64,019.70x = 96,018.48 × 28,951.20
  4. Step 4: Simplify right side
    64,019.70x = 2,779,850,218.18
  5. Step 5: Solve for x
    x = 2,779,850,218.18/64,019.70
  6. Step 6: Final answer
    x = 43,421.79

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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.