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Finding the Fourth Proportional to 70,766.34, 97,659.88 and 40,557.45

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Solution

The fourth proportional to 70,766.34, 97,659.88 and 40,557.45 is: 55,970.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,766.34 : 97,659.88 = 40,557.45 : x
  2. Step 2: Convert to fraction form
    70,766.34/97,659.88 = 40,557.45/x
  3. Step 3: Cross multiply
    70,766.34x = 97,659.88 × 40,557.45
  4. Step 4: Simplify right side
    70,766.34x = 3,960,835,529.67
  5. Step 5: Solve for x
    x = 3,960,835,529.67/70,766.34
  6. Step 6: Final answer
    x = 55,970.62

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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.