Home / 72,036.08-99,405.73-40,207.02

Finding the Fourth Proportional to 72,036.08, 99,405.73 and 40,207.02

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Solution

The fourth proportional to 72,036.08, 99,405.73 and 40,207.02 is: 55,483.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,036.08 : 99,405.73 = 40,207.02 : x
  2. Step 2: Convert to fraction form
    72,036.08/99,405.73 = 40,207.02/x
  3. Step 3: Cross multiply
    72,036.08x = 99,405.73 × 40,207.02
  4. Step 4: Simplify right side
    72,036.08x = 3,996,808,174.22
  5. Step 5: Solve for x
    x = 3,996,808,174.22/72,036.08
  6. Step 6: Final answer
    x = 55,483.42

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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.