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Finding the Fourth Proportional to 74,703.57, 103,089.15 and 40,713.14

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Solution

The fourth proportional to 74,703.57, 103,089.15 and 40,713.14 is: 56,183.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,703.57 : 103,089.15 = 40,713.14 : x
  2. Step 2: Convert to fraction form
    74,703.57/103,089.15 = 40,713.14/x
  3. Step 3: Cross multiply
    74,703.57x = 103,089.15 × 40,713.14
  4. Step 4: Simplify right side
    74,703.57x = 4,197,082,480.99
  5. Step 5: Solve for x
    x = 4,197,082,480.99/74,703.57
  6. Step 6: Final answer
    x = 56,183.16

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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.