Home / 72,089.02-99,481.80-40,258.36

Finding the Fourth Proportional to 72,089.02, 99,481.80 and 40,258.36

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Solution

The fourth proportional to 72,089.02, 99,481.80 and 40,258.36 is: 55,555.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,089.02 : 99,481.80 = 40,258.36 : x
  2. Step 2: Convert to fraction form
    72,089.02/99,481.80 = 40,258.36/x
  3. Step 3: Cross multiply
    72,089.02x = 99,481.80 × 40,258.36
  4. Step 4: Simplify right side
    72,089.02x = 4,004,974,117.85
  5. Step 5: Solve for x
    x = 4,004,974,117.85/72,089.02
  6. Step 6: Final answer
    x = 55,555.95

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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.