Home / 72,029.08-99,405.12-40,204.24

Finding the Fourth Proportional to 72,029.08, 99,405.12 and 40,204.24

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Solution

The fourth proportional to 72,029.08, 99,405.12 and 40,204.24 is: 55,484.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,029.08 : 99,405.12 = 40,204.24 : x
  2. Step 2: Convert to fraction form
    72,029.08/99,405.12 = 40,204.24/x
  3. Step 3: Cross multiply
    72,029.08x = 99,405.12 × 40,204.24
  4. Step 4: Simplify right side
    72,029.08x = 3,996,507,301.71
  5. Step 5: Solve for x
    x = 3,996,507,301.71/72,029.08
  6. Step 6: Final answer
    x = 55,484.64

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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.