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Finding the Fourth Proportional to 76,779.01, 105,892.38 and 64,466.88

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Solution

The fourth proportional to 76,779.01, 105,892.38 and 64,466.88 is: 88,911.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,779.01 : 105,892.38 = 64,466.88 : x
  2. Step 2: Convert to fraction form
    76,779.01/105,892.38 = 64,466.88/x
  3. Step 3: Cross multiply
    76,779.01x = 105,892.38 × 64,466.88
  4. Step 4: Simplify right side
    76,779.01x = 6,826,551,354.37
  5. Step 5: Solve for x
    x = 6,826,551,354.37/76,779.01
  6. Step 6: Final answer
    x = 88,911.69

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1.5x scale

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.