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Finding the Fourth Proportional to 64,430.20, 96,645.30 and 48,878.20

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Solution

The fourth proportional to 64,430.20, 96,645.30 and 48,878.20 is: 73,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,430.20 : 96,645.30 = 48,878.20 : x
  2. Step 2: Convert to fraction form
    64,430.20/96,645.30 = 48,878.20/x
  3. Step 3: Cross multiply
    64,430.20x = 96,645.30 × 48,878.20
  4. Step 4: Simplify right side
    64,430.20x = 4,723,848,302.46
  5. Step 5: Solve for x
    x = 4,723,848,302.46/64,430.20
  6. Step 6: Final answer
    x = 73,317.30

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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.