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Finding the Fourth Proportional to 70,167.60, 105,180.46 and 30,212.64

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Solution

The fourth proportional to 70,167.60, 105,180.46 and 30,212.64 is: 45,288.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,167.60 : 105,180.46 = 30,212.64 : x
  2. Step 2: Convert to fraction form
    70,167.60/105,180.46 = 30,212.64/x
  3. Step 3: Cross multiply
    70,167.60x = 105,180.46 × 30,212.64
  4. Step 4: Simplify right side
    70,167.60x = 3,177,779,373.01
  5. Step 5: Solve for x
    x = 3,177,779,373.01/70,167.60
  6. Step 6: Final answer
    x = 45,288.41

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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.