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Finding the Fourth Proportional to 70,885.60, 106,302.80 and 35,813.60

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Solution

The fourth proportional to 70,885.60, 106,302.80 and 35,813.60 is: 53,707.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,885.60 : 106,302.80 = 35,813.60 : x
  2. Step 2: Convert to fraction form
    70,885.60/106,302.80 = 35,813.60/x
  3. Step 3: Cross multiply
    70,885.60x = 106,302.80 × 35,813.60
  4. Step 4: Simplify right side
    70,885.60x = 3,807,085,958.08
  5. Step 5: Solve for x
    x = 3,807,085,958.08/70,885.60
  6. Step 6: Final answer
    x = 53,707.47

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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.