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Finding the Fourth Proportional to 70,904.21, 97,861.93 and 40,709.93

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Solution

The fourth proportional to 70,904.21, 97,861.93 and 40,709.93 is: 56,187.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,904.21 : 97,861.93 = 40,709.93 : x
  2. Step 2: Convert to fraction form
    70,904.21/97,861.93 = 40,709.93/x
  3. Step 3: Cross multiply
    70,904.21x = 97,861.93 × 40,709.93
  4. Step 4: Simplify right side
    70,904.21x = 3,983,952,319.96
  5. Step 5: Solve for x
    x = 3,983,952,319.96/70,904.21
  6. Step 6: Final answer
    x = 56,187.81

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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.