Home / 72,430.31-99,954.04-40,167.20

Finding the Fourth Proportional to 72,430.31, 99,954.04 and 40,167.20

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Solution

The fourth proportional to 72,430.31, 99,954.04 and 40,167.20 is: 55,430.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,430.31 : 99,954.04 = 40,167.20 : x
  2. Step 2: Convert to fraction form
    72,430.31/99,954.04 = 40,167.20/x
  3. Step 3: Cross multiply
    72,430.31x = 99,954.04 × 40,167.20
  4. Step 4: Simplify right side
    72,430.31x = 4,014,873,415.72
  5. Step 5: Solve for x
    x = 4,014,873,415.72/72,430.31
  6. Step 6: Final answer
    x = 55,430.85

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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.