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Finding the Fourth Proportional to 70,431.98, 97,188.81 and 40,214.12

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Solution

The fourth proportional to 70,431.98, 97,188.81 and 40,214.12 is: 55,491.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,431.98 : 97,188.81 = 40,214.12 : x
  2. Step 2: Convert to fraction form
    70,431.98/97,188.81 = 40,214.12/x
  3. Step 3: Cross multiply
    70,431.98x = 97,188.81 × 40,214.12
  4. Step 4: Simplify right side
    70,431.98x = 3,908,362,468.00
  5. Step 5: Solve for x
    x = 3,908,362,468.00/70,431.98
  6. Step 6: Final answer
    x = 55,491.30

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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.