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Finding the Fourth Proportional to 58,782.72, 81,100.22 and 38,638.02

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Solution

The fourth proportional to 58,782.72, 81,100.22 and 38,638.02 is: 53,307.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,782.72 : 81,100.22 = 38,638.02 : x
  2. Step 2: Convert to fraction form
    58,782.72/81,100.22 = 38,638.02/x
  3. Step 3: Cross multiply
    58,782.72x = 81,100.22 × 38,638.02
  4. Step 4: Simplify right side
    58,782.72x = 3,133,551,922.36
  5. Step 5: Solve for x
    x = 3,133,551,922.36/58,782.72
  6. Step 6: Final answer
    x = 53,307.37

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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.