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Finding the Fourth Proportional to 74,403.40, 111,605.10 and 65,363.80

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Solution

The fourth proportional to 74,403.40, 111,605.10 and 65,363.80 is: 98,045.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,403.40 : 111,605.10 = 65,363.80 : x
  2. Step 2: Convert to fraction form
    74,403.40/111,605.10 = 65,363.80/x
  3. Step 3: Cross multiply
    74,403.40x = 111,605.10 × 65,363.80
  4. Step 4: Simplify right side
    74,403.40x = 7,294,933,435.38
  5. Step 5: Solve for x
    x = 7,294,933,435.38/74,403.40
  6. Step 6: Final answer
    x = 98,045.70

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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.