Home / 72,981.31-109,258.59-65,977.37

Finding the Fourth Proportional to 72,981.31, 109,258.59 and 65,977.37

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Solution

The fourth proportional to 72,981.31, 109,258.59 and 65,977.37 is: 98,773.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,981.31 : 109,258.59 = 65,977.37 : x
  2. Step 2: Convert to fraction form
    72,981.31/109,258.59 = 65,977.37/x
  3. Step 3: Cross multiply
    72,981.31x = 109,258.59 × 65,977.37
  4. Step 4: Simplify right side
    72,981.31x = 7,208,594,418.11
  5. Step 5: Solve for x
    x = 7,208,594,418.11/72,981.31
  6. Step 6: Final answer
    x = 98,773.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.