Home / 64,420.80-96,704.10-38,140.35

Finding the Fourth Proportional to 64,420.80, 96,704.10 and 38,140.35

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Solution

The fourth proportional to 64,420.80, 96,704.10 and 38,140.35 is: 57,253.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,420.80 : 96,704.10 = 38,140.35 : x
  2. Step 2: Convert to fraction form
    64,420.80/96,704.10 = 38,140.35/x
  3. Step 3: Cross multiply
    64,420.80x = 96,704.10 × 38,140.35
  4. Step 4: Simplify right side
    64,420.80x = 3,688,328,220.44
  5. Step 5: Solve for x
    x = 3,688,328,220.44/64,420.80
  6. Step 6: Final answer
    x = 57,253.69

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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.