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Finding the Fourth Proportional to 85,863.76, 118,544.52 and 68,030.80

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Solution

The fourth proportional to 85,863.76, 118,544.52 and 68,030.80 is: 93,924.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,863.76 : 118,544.52 = 68,030.80 : x
  2. Step 2: Convert to fraction form
    85,863.76/118,544.52 = 68,030.80/x
  3. Step 3: Cross multiply
    85,863.76x = 118,544.52 × 68,030.80
  4. Step 4: Simplify right side
    85,863.76x = 8,064,678,531.22
  5. Step 5: Solve for x
    x = 8,064,678,531.22/85,863.76
  6. Step 6: Final answer
    x = 93,924.13

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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.