Home / 85,989.07-118,668.33-49,689.31

Finding the Fourth Proportional to 85,989.07, 118,668.33 and 49,689.31

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Solution

The fourth proportional to 85,989.07, 118,668.33 and 49,689.31 is: 68,573.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,989.07 : 118,668.33 = 49,689.31 : x
  2. Step 2: Convert to fraction form
    85,989.07/118,668.33 = 49,689.31/x
  3. Step 3: Cross multiply
    85,989.07x = 118,668.33 × 49,689.31
  4. Step 4: Simplify right side
    85,989.07x = 5,896,547,188.11
  5. Step 5: Solve for x
    x = 5,896,547,188.11/85,989.07
  6. Step 6: Final answer
    x = 68,573.22

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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.