Home / 85,886.64-118,382.20-57,583.28

Finding the Fourth Proportional to 85,886.64, 118,382.20 and 57,583.28

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Solution

The fourth proportional to 85,886.64, 118,382.20 and 57,583.28 is: 79,370.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,886.64 : 118,382.20 = 57,583.28 : x
  2. Step 2: Convert to fraction form
    85,886.64/118,382.20 = 57,583.28/x
  3. Step 3: Cross multiply
    85,886.64x = 118,382.20 × 57,583.28
  4. Step 4: Simplify right side
    85,886.64x = 6,816,835,369.62
  5. Step 5: Solve for x
    x = 6,816,835,369.62/85,886.64
  6. Step 6: Final answer
    x = 79,370.15

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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.