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Finding the Fourth Proportional to 74,435.80, 111,653.70 and 68,733.40

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Solution

The fourth proportional to 74,435.80, 111,653.70 and 68,733.40 is: 103,100.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,435.80 : 111,653.70 = 68,733.40 : x
  2. Step 2: Convert to fraction form
    74,435.80/111,653.70 = 68,733.40/x
  3. Step 3: Cross multiply
    74,435.80x = 111,653.70 × 68,733.40
  4. Step 4: Simplify right side
    74,435.80x = 7,674,338,423.58
  5. Step 5: Solve for x
    x = 7,674,338,423.58/74,435.80
  6. Step 6: Final answer
    x = 103,100.10

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1.5x scale

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.