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Finding the Fourth Proportional to 61,779.76, 85,255.49 and 34,555.52

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Solution

The fourth proportional to 61,779.76, 85,255.49 and 34,555.52 is: 47,686.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,779.76 : 85,255.49 = 34,555.52 : x
  2. Step 2: Convert to fraction form
    61,779.76/85,255.49 = 34,555.52/x
  3. Step 3: Cross multiply
    61,779.76x = 85,255.49 × 34,555.52
  4. Step 4: Simplify right side
    61,779.76x = 2,946,048,089.33
  5. Step 5: Solve for x
    x = 2,946,048,089.33/61,779.76
  6. Step 6: Final answer
    x = 47,686.30

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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.