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Finding the Fourth Proportional to 70,272.12, 104,907.21 and 67,811.16

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Solution

The fourth proportional to 70,272.12, 104,907.21 and 67,811.16 is: 101,233.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,272.12 : 104,907.21 = 67,811.16 : x
  2. Step 2: Convert to fraction form
    70,272.12/104,907.21 = 67,811.16/x
  3. Step 3: Cross multiply
    70,272.12x = 104,907.21 × 67,811.16
  4. Step 4: Simplify right side
    70,272.12x = 7,113,879,602.46
  5. Step 5: Solve for x
    x = 7,113,879,602.46/70,272.12
  6. Step 6: Final answer
    x = 101,233.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.