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Finding the Fourth Proportional to 97,617.60, 146,426.40 and 38,420.91

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Solution

The fourth proportional to 97,617.60, 146,426.40 and 38,420.91 is: 57,631.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,617.60 : 146,426.40 = 38,420.91 : x
  2. Step 2: Convert to fraction form
    97,617.60/146,426.40 = 38,420.91/x
  3. Step 3: Cross multiply
    97,617.60x = 146,426.40 × 38,420.91
  4. Step 4: Simplify right side
    97,617.60x = 5,625,835,536.02
  5. Step 5: Solve for x
    x = 5,625,835,536.02/97,617.60
  6. Step 6: Final answer
    x = 57,631.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.