Home / 72,319.83-99,789.48-45,443.31

Finding the Fourth Proportional to 72,319.83, 99,789.48 and 45,443.31

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Solution

The fourth proportional to 72,319.83, 99,789.48 and 45,443.31 is: 62,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,319.83 : 99,789.48 = 45,443.31 : x
  2. Step 2: Convert to fraction form
    72,319.83/99,789.48 = 45,443.31/x
  3. Step 3: Cross multiply
    72,319.83x = 99,789.48 × 45,443.31
  4. Step 4: Simplify right side
    72,319.83x = 4,534,764,274.38
  5. Step 5: Solve for x
    x = 4,534,764,274.38/72,319.83
  6. Step 6: Final answer
    x = 62,704.30

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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.