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Finding the Fourth Proportional to 99,875.88, 137,817.18 and 57,448.08

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Solution

The fourth proportional to 99,875.88, 137,817.18 and 57,448.08 is: 79,271.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,875.88 : 137,817.18 = 57,448.08 : x
  2. Step 2: Convert to fraction form
    99,875.88/137,817.18 = 57,448.08/x
  3. Step 3: Cross multiply
    99,875.88x = 137,817.18 × 57,448.08
  4. Step 4: Simplify right side
    99,875.88x = 7,917,332,382.01
  5. Step 5: Solve for x
    x = 7,917,332,382.01/99,875.88
  6. Step 6: Final answer
    x = 79,271.72

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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.