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Finding the Fourth Proportional to 70,235.40, 96,933.96 and 40,031.58

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Solution

The fourth proportional to 70,235.40, 96,933.96 and 40,031.58 is: 55,248.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,235.40 : 96,933.96 = 40,031.58 : x
  2. Step 2: Convert to fraction form
    70,235.40/96,933.96 = 40,031.58/x
  3. Step 3: Cross multiply
    70,235.40x = 96,933.96 × 40,031.58
  4. Step 4: Simplify right side
    70,235.40x = 3,880,419,574.46
  5. Step 5: Solve for x
    x = 3,880,419,574.46/70,235.40
  6. Step 6: Final answer
    x = 55,248.77

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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.