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Finding the Fourth Proportional to 84,915.86, 117,303.81 and 68,032.22

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Solution

The fourth proportional to 84,915.86, 117,303.81 and 68,032.22 is: 93,980.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,915.86 : 117,303.81 = 68,032.22 : x
  2. Step 2: Convert to fraction form
    84,915.86/117,303.81 = 68,032.22/x
  3. Step 3: Cross multiply
    84,915.86x = 117,303.81 × 68,032.22
  4. Step 4: Simplify right side
    84,915.86x = 7,980,438,608.76
  5. Step 5: Solve for x
    x = 7,980,438,608.76/84,915.86
  6. Step 6: Final answer
    x = 93,980.54

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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.