Home / 77,779.16-116,640.12-61,171.64

Finding the Fourth Proportional to 77,779.16, 116,640.12 and 61,171.64

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Solution

The fourth proportional to 77,779.16, 116,640.12 and 61,171.64 is: 91,734.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,779.16 : 116,640.12 = 61,171.64 : x
  2. Step 2: Convert to fraction form
    77,779.16/116,640.12 = 61,171.64/x
  3. Step 3: Cross multiply
    77,779.16x = 116,640.12 × 61,171.64
  4. Step 4: Simplify right side
    77,779.16x = 7,135,067,430.20
  5. Step 5: Solve for x
    x = 7,135,067,430.20/77,779.16
  6. Step 6: Final answer
    x = 91,734.95

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1.5x scale

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.