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Finding the Fourth Proportional to 70,743, 97,639.21 and 40,548.57

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Solution

The fourth proportional to 70,743, 97,639.21 and 40,548.57 is: 55,964.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,743 : 97,639.21 = 40,548.57 : x
  2. Step 2: Convert to fraction form
    70,743/97,639.21 = 40,548.57/x
  3. Step 3: Cross multiply
    70,743x = 97,639.21 × 40,548.57
  4. Step 4: Simplify right side
    70,743x = 3,959,130,341.43
  5. Step 5: Solve for x
    x = 3,959,130,341.43/70,743
  6. Step 6: Final answer
    x = 55,964.98

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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.