Home / 88,143.04-121,636.70-47,856

Finding the Fourth Proportional to 88,143.04, 121,636.70 and 47,856

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Solution

The fourth proportional to 88,143.04, 121,636.70 and 47,856 is: 66,040.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,143.04 : 121,636.70 = 47,856 : x
  2. Step 2: Convert to fraction form
    88,143.04/121,636.70 = 47,856/x
  3. Step 3: Cross multiply
    88,143.04x = 121,636.70 × 47,856
  4. Step 4: Simplify right side
    88,143.04x = 5,821,045,915.20
  5. Step 5: Solve for x
    x = 5,821,045,915.20/88,143.04
  6. Step 6: Final answer
    x = 66,040.90

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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.