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Finding the Fourth Proportional to 70,270.32, 96,973.86 and 38,438.54

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Solution

The fourth proportional to 70,270.32, 96,973.86 and 38,438.54 is: 53,045.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,270.32 : 96,973.86 = 38,438.54 : x
  2. Step 2: Convert to fraction form
    70,270.32/96,973.86 = 38,438.54/x
  3. Step 3: Cross multiply
    70,270.32x = 96,973.86 × 38,438.54
  4. Step 4: Simplify right side
    70,270.32x = 3,727,533,111.70
  5. Step 5: Solve for x
    x = 3,727,533,111.70/70,270.32
  6. Step 6: Final answer
    x = 53,045.63

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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.