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Finding the Fourth Proportional to 74,656.32, 103,024.84 and 40,664.70

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Solution

The fourth proportional to 74,656.32, 103,024.84 and 40,664.70 is: 56,116.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,656.32 : 103,024.84 = 40,664.70 : x
  2. Step 2: Convert to fraction form
    74,656.32/103,024.84 = 40,664.70/x
  3. Step 3: Cross multiply
    74,656.32x = 103,024.84 × 40,664.70
  4. Step 4: Simplify right side
    74,656.32x = 4,189,474,211.15
  5. Step 5: Solve for x
    x = 4,189,474,211.15/74,656.32
  6. Step 6: Final answer
    x = 56,116.81

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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.