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Finding the Fourth Proportional to 70,908.86, 97,854.41 and 38,643.73

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Solution

The fourth proportional to 70,908.86, 97,854.41 and 38,643.73 is: 53,328.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,908.86 : 97,854.41 = 38,643.73 : x
  2. Step 2: Convert to fraction form
    70,908.86/97,854.41 = 38,643.73/x
  3. Step 3: Cross multiply
    70,908.86x = 97,854.41 × 38,643.73
  4. Step 4: Simplify right side
    70,908.86x = 3,781,459,399.35
  5. Step 5: Solve for x
    x = 3,781,459,399.35/70,908.86
  6. Step 6: Final answer
    x = 53,328.45

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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.