Home / 85,876.22-128,851.41-46,461.08

Finding the Fourth Proportional to 85,876.22, 128,851.41 and 46,461.08

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Solution

The fourth proportional to 85,876.22, 128,851.41 and 46,461.08 is: 69,711.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,876.22 : 128,851.41 = 46,461.08 : x
  2. Step 2: Convert to fraction form
    85,876.22/128,851.41 = 46,461.08/x
  3. Step 3: Cross multiply
    85,876.22x = 128,851.41 × 46,461.08
  4. Step 4: Simplify right side
    85,876.22x = 5,986,575,668.12
  5. Step 5: Solve for x
    x = 5,986,575,668.12/85,876.22
  6. Step 6: Final answer
    x = 69,711.68

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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.