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Finding the Fourth Proportional to 70,721.76, 97,598.64 and 38,893.44

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Solution

The fourth proportional to 70,721.76, 97,598.64 and 38,893.44 is: 53,674.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,721.76 : 97,598.64 = 38,893.44 : x
  2. Step 2: Convert to fraction form
    70,721.76/97,598.64 = 38,893.44/x
  3. Step 3: Cross multiply
    70,721.76x = 97,598.64 × 38,893.44
  4. Step 4: Simplify right side
    70,721.76x = 3,795,946,848.92
  5. Step 5: Solve for x
    x = 3,795,946,848.92/70,721.76
  6. Step 6: Final answer
    x = 53,674.38

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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.