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Finding the Fourth Proportional to 74,710.94, 103,099.68 and 40,719.69

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Solution

The fourth proportional to 74,710.94, 103,099.68 and 40,719.69 is: 56,192.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,710.94 : 103,099.68 = 40,719.69 : x
  2. Step 2: Convert to fraction form
    74,710.94/103,099.68 = 40,719.69/x
  3. Step 3: Cross multiply
    74,710.94x = 103,099.68 × 40,719.69
  4. Step 4: Simplify right side
    74,710.94x = 4,198,187,008.70
  5. Step 5: Solve for x
    x = 4,198,187,008.70/74,710.94
  6. Step 6: Final answer
    x = 56,192.40

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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.