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Finding the Fourth Proportional to 65,555.57, 98,258.94 and 57,642.77

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Solution

The fourth proportional to 65,555.57, 98,258.94 and 57,642.77 is: 86,398.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,555.57 : 98,258.94 = 57,642.77 : x
  2. Step 2: Convert to fraction form
    65,555.57/98,258.94 = 57,642.77/x
  3. Step 3: Cross multiply
    65,555.57x = 98,258.94 × 57,642.77
  4. Step 4: Simplify right side
    65,555.57x = 5,663,917,724.51
  5. Step 5: Solve for x
    x = 5,663,917,724.51/65,555.57
  6. Step 6: Final answer
    x = 86,398.72

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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.