Home / 77,758.52-107,316.20-43,779.72

Finding the Fourth Proportional to 77,758.52, 107,316.20 and 43,779.72

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Solution

The fourth proportional to 77,758.52, 107,316.20 and 43,779.72 is: 60,421.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,758.52 : 107,316.20 = 43,779.72 : x
  2. Step 2: Convert to fraction form
    77,758.52/107,316.20 = 43,779.72/x
  3. Step 3: Cross multiply
    77,758.52x = 107,316.20 × 43,779.72
  4. Step 4: Simplify right side
    77,758.52x = 4,698,273,187.46
  5. Step 5: Solve for x
    x = 4,698,273,187.46/77,758.52
  6. Step 6: Final answer
    x = 60,421.33

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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.