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Finding the Fourth Proportional to 70,419.90, 105,607.80 and 23,661.84

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Solution

The fourth proportional to 70,419.90, 105,607.80 and 23,661.84 is: 35,485.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,419.90 : 105,607.80 = 23,661.84 : x
  2. Step 2: Convert to fraction form
    70,419.90/105,607.80 = 23,661.84/x
  3. Step 3: Cross multiply
    70,419.90x = 105,607.80 × 23,661.84
  4. Step 4: Simplify right side
    70,419.90x = 2,498,874,866.35
  5. Step 5: Solve for x
    x = 2,498,874,866.35/70,419.90
  6. Step 6: Final answer
    x = 35,485.35

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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.