Home / 72,058.23-99,438.71-40,230.09

Finding the Fourth Proportional to 72,058.23, 99,438.71 and 40,230.09

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Solution

The fourth proportional to 72,058.23, 99,438.71 and 40,230.09 is: 55,516.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,058.23 : 99,438.71 = 40,230.09 : x
  2. Step 2: Convert to fraction form
    72,058.23/99,438.71 = 40,230.09/x
  3. Step 3: Cross multiply
    72,058.23x = 99,438.71 × 40,230.09
  4. Step 4: Simplify right side
    72,058.23x = 4,000,428,051.63
  5. Step 5: Solve for x
    x = 4,000,428,051.63/72,058.23
  6. Step 6: Final answer
    x = 55,516.60

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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.