Home / 82,323.40-123,485.10-72,646.60

Finding the Fourth Proportional to 82,323.40, 123,485.10 and 72,646.60

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Solution

The fourth proportional to 82,323.40, 123,485.10 and 72,646.60 is: 108,969.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,323.40 : 123,485.10 = 72,646.60 : x
  2. Step 2: Convert to fraction form
    82,323.40/123,485.10 = 72,646.60/x
  3. Step 3: Cross multiply
    82,323.40x = 123,485.10 × 72,646.60
  4. Step 4: Simplify right side
    82,323.40x = 8,970,772,665.66
  5. Step 5: Solve for x
    x = 8,970,772,665.66/82,323.40
  6. Step 6: Final answer
    x = 108,969.90

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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.