Home / 76,036.40-104,785.08-66,083.12

Finding the Fourth Proportional to 76,036.40, 104,785.08 and 66,083.12

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Solution

The fourth proportional to 76,036.40, 104,785.08 and 66,083.12 is: 91,068.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,036.40 : 104,785.08 = 66,083.12 : x
  2. Step 2: Convert to fraction form
    76,036.40/104,785.08 = 66,083.12/x
  3. Step 3: Cross multiply
    76,036.40x = 104,785.08 × 66,083.12
  4. Step 4: Simplify right side
    76,036.40x = 6,924,525,015.85
  5. Step 5: Solve for x
    x = 6,924,525,015.85/76,036.40
  6. Step 6: Final answer
    x = 91,068.55

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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.