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Finding the Fourth Proportional to 34,695.42, 47,879.66 and 18,779.87

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Solution

The fourth proportional to 34,695.42, 47,879.66 and 18,779.87 is: 25,916.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,695.42 : 47,879.66 = 18,779.87 : x
  2. Step 2: Convert to fraction form
    34,695.42/47,879.66 = 18,779.87/x
  3. Step 3: Cross multiply
    34,695.42x = 47,879.66 × 18,779.87
  4. Step 4: Simplify right side
    34,695.42x = 899,173,598.00
  5. Step 5: Solve for x
    x = 899,173,598.00/34,695.42
  6. Step 6: Final answer
    x = 25,916.20

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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.