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Finding the Fourth Proportional to 70,999.52, 97,968.76 and 40,786.16

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Solution

The fourth proportional to 70,999.52, 97,968.76 and 40,786.16 is: 56,278.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,999.52 : 97,968.76 = 40,786.16 : x
  2. Step 2: Convert to fraction form
    70,999.52/97,968.76 = 40,786.16/x
  3. Step 3: Cross multiply
    70,999.52x = 97,968.76 × 40,786.16
  4. Step 4: Simplify right side
    70,999.52x = 3,995,769,520.36
  5. Step 5: Solve for x
    x = 3,995,769,520.36/70,999.52
  6. Step 6: Final answer
    x = 56,278.82

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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.