Home / 72,260.48-99,729.52-40,431.54

Finding the Fourth Proportional to 72,260.48, 99,729.52 and 40,431.54

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Solution

The fourth proportional to 72,260.48, 99,729.52 and 40,431.54 is: 55,801.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,260.48 : 99,729.52 = 40,431.54 : x
  2. Step 2: Convert to fraction form
    72,260.48/99,729.52 = 40,431.54/x
  3. Step 3: Cross multiply
    72,260.48x = 99,729.52 × 40,431.54
  4. Step 4: Simplify right side
    72,260.48x = 4,032,218,077.06
  5. Step 5: Solve for x
    x = 4,032,218,077.06/72,260.48
  6. Step 6: Final answer
    x = 55,801.15

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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.