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Finding the Fourth Proportional to 97,490.71, 134,530.73 and 56,651.21

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Solution

The fourth proportional to 97,490.71, 134,530.73 and 56,651.21 is: 78,174.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,490.71 : 134,530.73 = 56,651.21 : x
  2. Step 2: Convert to fraction form
    97,490.71/134,530.73 = 56,651.21/x
  3. Step 3: Cross multiply
    97,490.71x = 134,530.73 × 56,651.21
  4. Step 4: Simplify right side
    97,490.71x = 7,621,328,353.43
  5. Step 5: Solve for x
    x = 7,621,328,353.43/97,490.71
  6. Step 6: Final answer
    x = 78,174.92

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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.