Home / 74,804.15-112,074.72-66,668.51

Finding the Fourth Proportional to 74,804.15, 112,074.72 and 66,668.51

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Solution

The fourth proportional to 74,804.15, 112,074.72 and 66,668.51 is: 99,885.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,804.15 : 112,074.72 = 66,668.51 : x
  2. Step 2: Convert to fraction form
    74,804.15/112,074.72 = 66,668.51/x
  3. Step 3: Cross multiply
    74,804.15x = 112,074.72 × 66,668.51
  4. Step 4: Simplify right side
    74,804.15x = 7,471,854,030.69
  5. Step 5: Solve for x
    x = 7,471,854,030.69/74,804.15
  6. Step 6: Final answer
    x = 99,885.56

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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.