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Finding the Fourth Proportional to 70,649.56, 97,490.82 and 40,435.48

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Solution

The fourth proportional to 70,649.56, 97,490.82 and 40,435.48 is: 55,797.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,649.56 : 97,490.82 = 40,435.48 : x
  2. Step 2: Convert to fraction form
    70,649.56/97,490.82 = 40,435.48/x
  3. Step 3: Cross multiply
    70,649.56x = 97,490.82 × 40,435.48
  4. Step 4: Simplify right side
    70,649.56x = 3,942,088,102.29
  5. Step 5: Solve for x
    x = 3,942,088,102.29/70,649.56
  6. Step 6: Final answer
    x = 55,797.77

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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.