Home / 72,290.97-99,749.64-45,414.45

Finding the Fourth Proportional to 72,290.97, 99,749.64 and 45,414.45

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Solution

The fourth proportional to 72,290.97, 99,749.64 and 45,414.45 is: 62,664.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,290.97 : 99,749.64 = 45,414.45 : x
  2. Step 2: Convert to fraction form
    72,290.97/99,749.64 = 45,414.45/x
  3. Step 3: Cross multiply
    72,290.97x = 99,749.64 × 45,414.45
  4. Step 4: Simplify right side
    72,290.97x = 4,530,075,038.30
  5. Step 5: Solve for x
    x = 4,530,075,038.30/72,290.97
  6. Step 6: Final answer
    x = 62,664.47

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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.