Home / 70,322.02-105,491.23-28,216.80

Finding the Fourth Proportional to 70,322.02, 105,491.23 and 28,216.80

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Solution

The fourth proportional to 70,322.02, 105,491.23 and 28,216.80 is: 42,328.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,322.02 : 105,491.23 = 28,216.80 : x
  2. Step 2: Convert to fraction form
    70,322.02/105,491.23 = 28,216.80/x
  3. Step 3: Cross multiply
    70,322.02x = 105,491.23 × 28,216.80
  4. Step 4: Simplify right side
    70,322.02x = 2,976,624,868.12
  5. Step 5: Solve for x
    x = 2,976,624,868.12/70,322.02
  6. Step 6: Final answer
    x = 42,328.49

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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.