Home / 86,804.40-119,799-52,815.32

Finding the Fourth Proportional to 86,804.40, 119,799 and 52,815.32

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Solution

The fourth proportional to 86,804.40, 119,799 and 52,815.32 is: 72,890.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,804.40 : 119,799 = 52,815.32 : x
  2. Step 2: Convert to fraction form
    86,804.40/119,799 = 52,815.32/x
  3. Step 3: Cross multiply
    86,804.40x = 119,799 × 52,815.32
  4. Step 4: Simplify right side
    86,804.40x = 6,327,222,520.68
  5. Step 5: Solve for x
    x = 6,327,222,520.68/86,804.40
  6. Step 6: Final answer
    x = 72,890.57

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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.