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Finding the Fourth Proportional to 61,258.79, 91,829.85 and 19,676.63

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Solution

The fourth proportional to 61,258.79, 91,829.85 and 19,676.63 is: 29,496.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,258.79 : 91,829.85 = 19,676.63 : x
  2. Step 2: Convert to fraction form
    61,258.79/91,829.85 = 19,676.63/x
  3. Step 3: Cross multiply
    61,258.79x = 91,829.85 × 19,676.63
  4. Step 4: Simplify right side
    61,258.79x = 1,806,901,522.26
  5. Step 5: Solve for x
    x = 1,806,901,522.26/61,258.79
  6. Step 6: Final answer
    x = 29,496.20

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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.