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Finding the Fourth Proportional to 70,644.45, 97,489.05 and 40,429.63

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Solution

The fourth proportional to 70,644.45, 97,489.05 and 40,429.63 is: 55,792.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,644.45 : 97,489.05 = 40,429.63 : x
  2. Step 2: Convert to fraction form
    70,644.45/97,489.05 = 40,429.63/x
  3. Step 3: Cross multiply
    70,644.45x = 97,489.05 × 40,429.63
  4. Step 4: Simplify right side
    70,644.45x = 3,941,445,733.11
  5. Step 5: Solve for x
    x = 3,941,445,733.11/70,644.45
  6. Step 6: Final answer
    x = 55,792.72

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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.