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Finding the Fourth Proportional to 74,722.70, 103,117.46 and 40,731.46

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Solution

The fourth proportional to 74,722.70, 103,117.46 and 40,731.46 is: 56,209.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,722.70 : 103,117.46 = 40,731.46 : x
  2. Step 2: Convert to fraction form
    74,722.70/103,117.46 = 40,731.46/x
  3. Step 3: Cross multiply
    74,722.70x = 103,117.46 × 40,731.46
  4. Step 4: Simplify right side
    74,722.70x = 4,200,124,235.84
  5. Step 5: Solve for x
    x = 4,200,124,235.84/74,722.70
  6. Step 6: Final answer
    x = 56,209.48

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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.