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Finding the Fourth Proportional to 77,779.20, 107,335.08 and 44,245.20

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Solution

The fourth proportional to 77,779.20, 107,335.08 and 44,245.20 is: 61,058.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,779.20 : 107,335.08 = 44,245.20 : x
  2. Step 2: Convert to fraction form
    77,779.20/107,335.08 = 44,245.20/x
  3. Step 3: Cross multiply
    77,779.20x = 107,335.08 × 44,245.20
  4. Step 4: Simplify right side
    77,779.20x = 4,749,062,081.62
  5. Step 5: Solve for x
    x = 4,749,062,081.62/77,779.20
  6. Step 6: Final answer
    x = 61,058.25

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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.