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Finding the Fourth Proportional to 70,643.30, 97,487.35 and 38,377.64

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Solution

The fourth proportional to 70,643.30, 97,487.35 and 38,377.64 is: 52,960.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,643.30 : 97,487.35 = 38,377.64 : x
  2. Step 2: Convert to fraction form
    70,643.30/97,487.35 = 38,377.64/x
  3. Step 3: Cross multiply
    70,643.30x = 97,487.35 × 38,377.64
  4. Step 4: Simplify right side
    70,643.30x = 3,741,334,570.63
  5. Step 5: Solve for x
    x = 3,741,334,570.63/70,643.30
  6. Step 6: Final answer
    x = 52,960.93

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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.