Home / 77,783.10-107,321.67-43,784.70

Finding the Fourth Proportional to 77,783.10, 107,321.67 and 43,784.70

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Solution

The fourth proportional to 77,783.10, 107,321.67 and 43,784.70 is: 60,412.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,783.10 : 107,321.67 = 43,784.70 : x
  2. Step 2: Convert to fraction form
    77,783.10/107,321.67 = 43,784.70/x
  3. Step 3: Cross multiply
    77,783.10x = 107,321.67 × 43,784.70
  4. Step 4: Simplify right side
    77,783.10x = 4,699,047,124.45
  5. Step 5: Solve for x
    x = 4,699,047,124.45/77,783.10
  6. Step 6: Final answer
    x = 60,412.19

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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.