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Finding the Fourth Proportional to 77,779.70, 116,539.95 and 73,114.10

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Solution

The fourth proportional to 77,779.70, 116,539.95 and 73,114.10 is: 109,549.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,779.70 : 116,539.95 = 73,114.10 : x
  2. Step 2: Convert to fraction form
    77,779.70/116,539.95 = 73,114.10/x
  3. Step 3: Cross multiply
    77,779.70x = 116,539.95 × 73,114.10
  4. Step 4: Simplify right side
    77,779.70x = 8,520,713,558.30
  5. Step 5: Solve for x
    x = 8,520,713,558.30/77,779.70
  6. Step 6: Final answer
    x = 109,549.32

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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.