Home / 99,043.24-136,678.44-53,720.50

Finding the Fourth Proportional to 99,043.24, 136,678.44 and 53,720.50

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Solution

The fourth proportional to 99,043.24, 136,678.44 and 53,720.50 is: 74,133.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,043.24 : 136,678.44 = 53,720.50 : x
  2. Step 2: Convert to fraction form
    99,043.24/136,678.44 = 53,720.50/x
  3. Step 3: Cross multiply
    99,043.24x = 136,678.44 × 53,720.50
  4. Step 4: Simplify right side
    99,043.24x = 7,342,434,136.02
  5. Step 5: Solve for x
    x = 7,342,434,136.02/99,043.24
  6. Step 6: Final answer
    x = 74,133.62

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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.