Home / 77,349.10-116,023.73-21,189.69

Finding the Fourth Proportional to 77,349.10, 116,023.73 and 21,189.69

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Solution

The fourth proportional to 77,349.10, 116,023.73 and 21,189.69 is: 31,784.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,349.10 : 116,023.73 = 21,189.69 : x
  2. Step 2: Convert to fraction form
    77,349.10/116,023.73 = 21,189.69/x
  3. Step 3: Cross multiply
    77,349.10x = 116,023.73 × 21,189.69
  4. Step 4: Simplify right side
    77,349.10x = 2,458,506,924.32
  5. Step 5: Solve for x
    x = 2,458,506,924.32/77,349.10
  6. Step 6: Final answer
    x = 31,784.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.