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Finding the Fourth Proportional to 64,262.85, 96,420.94 and 39,303.78

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Solution

The fourth proportional to 64,262.85, 96,420.94 and 39,303.78 is: 58,971.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,262.85 : 96,420.94 = 39,303.78 : x
  2. Step 2: Convert to fraction form
    64,262.85/96,420.94 = 39,303.78/x
  3. Step 3: Cross multiply
    64,262.85x = 96,420.94 × 39,303.78
  4. Step 4: Simplify right side
    64,262.85x = 3,789,707,314.89
  5. Step 5: Solve for x
    x = 3,789,707,314.89/64,262.85
  6. Step 6: Final answer
    x = 58,971.98

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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.