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Finding the Fourth Proportional to 74,813.52, 103,242.06 and 40,821.24

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Solution

The fourth proportional to 74,813.52, 103,242.06 and 40,821.24 is: 56,332.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,813.52 : 103,242.06 = 40,821.24 : x
  2. Step 2: Convert to fraction form
    74,813.52/103,242.06 = 40,821.24/x
  3. Step 3: Cross multiply
    74,813.52x = 103,242.06 × 40,821.24
  4. Step 4: Simplify right side
    74,813.52x = 4,214,468,909.35
  5. Step 5: Solve for x
    x = 4,214,468,909.35/74,813.52
  6. Step 6: Final answer
    x = 56,332.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.