Home / 64,860.12-89,491.67-39,365.88

Finding the Fourth Proportional to 64,860.12, 89,491.67 and 39,365.88

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Solution

The fourth proportional to 64,860.12, 89,491.67 and 39,365.88 is: 54,315.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,860.12 : 89,491.67 = 39,365.88 : x
  2. Step 2: Convert to fraction form
    64,860.12/89,491.67 = 39,365.88/x
  3. Step 3: Cross multiply
    64,860.12x = 89,491.67 × 39,365.88
  4. Step 4: Simplify right side
    64,860.12x = 3,522,918,145.39
  5. Step 5: Solve for x
    x = 3,522,918,145.39/64,860.12
  6. Step 6: Final answer
    x = 54,315.63

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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.