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Finding the Fourth Proportional to 84,548.31, 116,488.80 and 55,816.80

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Solution

The fourth proportional to 84,548.31, 116,488.80 and 55,816.80 is: 76,903.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,548.31 : 116,488.80 = 55,816.80 : x
  2. Step 2: Convert to fraction form
    84,548.31/116,488.80 = 55,816.80/x
  3. Step 3: Cross multiply
    84,548.31x = 116,488.80 × 55,816.80
  4. Step 4: Simplify right side
    84,548.31x = 6,502,032,051.84
  5. Step 5: Solve for x
    x = 6,502,032,051.84/84,548.31
  6. Step 6: Final answer
    x = 76,903.16

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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.