Home / 42,970.23-64,457.09-20,469.34

Finding the Fourth Proportional to 42,970.23, 64,457.09 and 20,469.34

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Solution

The fourth proportional to 42,970.23, 64,457.09 and 20,469.34 is: 30,704.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,970.23 : 64,457.09 = 20,469.34 : x
  2. Step 2: Convert to fraction form
    42,970.23/64,457.09 = 20,469.34/x
  3. Step 3: Cross multiply
    42,970.23x = 64,457.09 × 20,469.34
  4. Step 4: Simplify right side
    42,970.23x = 1,319,394,145.61
  5. Step 5: Solve for x
    x = 1,319,394,145.61/42,970.23
  6. Step 6: Final answer
    x = 30,704.84

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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.