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Finding the Fourth Proportional to 70,695.56, 97,565.64 and 40,490.66

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Solution

The fourth proportional to 70,695.56, 97,565.64 and 40,490.66 is: 55,880.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,695.56 : 97,565.64 = 40,490.66 : x
  2. Step 2: Convert to fraction form
    70,695.56/97,565.64 = 40,490.66/x
  3. Step 3: Cross multiply
    70,695.56x = 97,565.64 × 40,490.66
  4. Step 4: Simplify right side
    70,695.56x = 3,950,497,156.92
  5. Step 5: Solve for x
    x = 3,950,497,156.92/70,695.56
  6. Step 6: Final answer
    x = 55,880.41

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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.