Home / 78,743.08-108,666.56-42,933.68

Finding the Fourth Proportional to 78,743.08, 108,666.56 and 42,933.68

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Solution

The fourth proportional to 78,743.08, 108,666.56 and 42,933.68 is: 59,249.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,743.08 : 108,666.56 = 42,933.68 : x
  2. Step 2: Convert to fraction form
    78,743.08/108,666.56 = 42,933.68/x
  3. Step 3: Cross multiply
    78,743.08x = 108,666.56 × 42,933.68
  4. Step 4: Simplify right side
    78,743.08x = 4,665,455,313.74
  5. Step 5: Solve for x
    x = 4,665,455,313.74/78,743.08
  6. Step 6: Final answer
    x = 59,249.08

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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.