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Finding the Fourth Proportional to 99,030, 136,661.40 and 54,317.04

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Solution

The fourth proportional to 99,030, 136,661.40 and 54,317.04 is: 74,957.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,030 : 136,661.40 = 54,317.04 : x
  2. Step 2: Convert to fraction form
    99,030/136,661.40 = 54,317.04/x
  3. Step 3: Cross multiply
    99,030x = 136,661.40 × 54,317.04
  4. Step 4: Simplify right side
    99,030x = 7,423,042,730.26
  5. Step 5: Solve for x
    x = 7,423,042,730.26/99,030
  6. Step 6: Final answer
    x = 74,957.52

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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.