Home / 85,457.09-117,930.08-47,216.51

Finding the Fourth Proportional to 85,457.09, 117,930.08 and 47,216.51

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Solution

The fourth proportional to 85,457.09, 117,930.08 and 47,216.51 is: 65,158.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,457.09 : 117,930.08 = 47,216.51 : x
  2. Step 2: Convert to fraction form
    85,457.09/117,930.08 = 47,216.51/x
  3. Step 3: Cross multiply
    85,457.09x = 117,930.08 × 47,216.51
  4. Step 4: Simplify right side
    85,457.09x = 5,568,246,860.36
  5. Step 5: Solve for x
    x = 5,568,246,860.36/85,457.09
  6. Step 6: Final answer
    x = 65,158.40

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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.