Home / 72,189.06-99,623.09-40,359.30

Finding the Fourth Proportional to 72,189.06, 99,623.09 and 40,359.30

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Solution

The fourth proportional to 72,189.06, 99,623.09 and 40,359.30 is: 55,697.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,189.06 : 99,623.09 = 40,359.30 : x
  2. Step 2: Convert to fraction form
    72,189.06/99,623.09 = 40,359.30/x
  3. Step 3: Cross multiply
    72,189.06x = 99,623.09 × 40,359.30
  4. Step 4: Simplify right side
    72,189.06x = 4,020,718,176.24
  5. Step 5: Solve for x
    x = 4,020,718,176.24/72,189.06
  6. Step 6: Final answer
    x = 55,697.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.