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Finding the Fourth Proportional to 70,968.40, 97,976.40 and 47,127.68

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Solution

The fourth proportional to 70,968.40, 97,976.40 and 47,127.68 is: 65,062.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,968.40 : 97,976.40 = 47,127.68 : x
  2. Step 2: Convert to fraction form
    70,968.40/97,976.40 = 47,127.68/x
  3. Step 3: Cross multiply
    70,968.40x = 97,976.40 × 47,127.68
  4. Step 4: Simplify right side
    70,968.40x = 4,617,400,426.75
  5. Step 5: Solve for x
    x = 4,617,400,426.75/70,968.40
  6. Step 6: Final answer
    x = 65,062.77

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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.