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Finding the Fourth Proportional to 65,989.40, 99,050.00 and 36,421.16

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Solution

The fourth proportional to 65,989.40, 99,050.00 and 36,421.16 is: 54,668.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,989.40 : 99,050.00 = 36,421.16 : x
  2. Step 2: Convert to fraction form
    65,989.40/99,050.00 = 36,421.16/x
  3. Step 3: Cross multiply
    65,989.40x = 99,050.00 × 36,421.16
  4. Step 4: Simplify right side
    65,989.40x = 3,607,515,220.64
  5. Step 5: Solve for x
    x = 3,607,515,220.64/65,989.40
  6. Step 6: Final answer
    x = 54,668.11

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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.