Home / 74,337.90-111,636.45-72,005.10

Finding the Fourth Proportional to 74,337.90, 111,636.45 and 72,005.10

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Solution

The fourth proportional to 74,337.90, 111,636.45 and 72,005.10 is: 108,133.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,337.90 : 111,636.45 = 72,005.10 : x
  2. Step 2: Convert to fraction form
    74,337.90/111,636.45 = 72,005.10/x
  3. Step 3: Cross multiply
    74,337.90x = 111,636.45 × 72,005.10
  4. Step 4: Simplify right side
    74,337.90x = 8,038,393,745.90
  5. Step 5: Solve for x
    x = 8,038,393,745.90/74,337.90
  6. Step 6: Final answer
    x = 108,133.18

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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.