Home / 77,188.68-115,804.89-39,776.13

Finding the Fourth Proportional to 77,188.68, 115,804.89 and 39,776.13

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Solution

The fourth proportional to 77,188.68, 115,804.89 and 39,776.13 is: 59,675.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,188.68 : 115,804.89 = 39,776.13 : x
  2. Step 2: Convert to fraction form
    77,188.68/115,804.89 = 39,776.13/x
  3. Step 3: Cross multiply
    77,188.68x = 115,804.89 × 39,776.13
  4. Step 4: Simplify right side
    77,188.68x = 4,606,270,359.28
  5. Step 5: Solve for x
    x = 4,606,270,359.28/77,188.68
  6. Step 6: Final answer
    x = 59,675.46

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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.