Home / 72,430.90-108,629.74-19,844.48

Finding the Fourth Proportional to 72,430.90, 108,629.74 and 19,844.48

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Solution

The fourth proportional to 72,430.90, 108,629.74 and 19,844.48 is: 29,762.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,430.90 : 108,629.74 = 19,844.48 : x
  2. Step 2: Convert to fraction form
    72,430.90/108,629.74 = 19,844.48/x
  3. Step 3: Cross multiply
    72,430.90x = 108,629.74 × 19,844.48
  4. Step 4: Simplify right side
    72,430.90x = 2,155,700,702.84
  5. Step 5: Solve for x
    x = 2,155,700,702.84/72,430.90
  6. Step 6: Final answer
    x = 29,762.17

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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.