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Finding the Fourth Proportional to 84,886.63, 117,179.48 and 57,297.28

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Solution

The fourth proportional to 84,886.63, 117,179.48 and 57,297.28 is: 79,094.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,886.63 : 117,179.48 = 57,297.28 : x
  2. Step 2: Convert to fraction form
    84,886.63/117,179.48 = 57,297.28/x
  3. Step 3: Cross multiply
    84,886.63x = 117,179.48 × 57,297.28
  4. Step 4: Simplify right side
    84,886.63x = 6,714,065,475.81
  5. Step 5: Solve for x
    x = 6,714,065,475.81/84,886.63
  6. Step 6: Final answer
    x = 79,094.50

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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.