Home / 38,639,323.12-53,323,544.69-21,236,285.20

Finding the Fourth Proportional to 38,639,323.12, 53,323,544.69 and 21,236,285.20

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Solution

The fourth proportional to 38,639,323.12, 53,323,544.69 and 21,236,285.20 is: 29,306,776.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,639,323.12 : 53,323,544.69 = 21,236,285.20 : x
  2. Step 2: Convert to fraction form
    38,639,323.12/53,323,544.69 = 21,236,285.20/x
  3. Step 3: Cross multiply
    38,639,323.12x = 53,323,544.69 × 21,236,285.20
  4. Step 4: Simplify right side
    38,639,323.12x = 1,132,394,002,911,785.50
  5. Step 5: Solve for x
    x = 1,132,394,002,911,785.50/38,639,323.12
  6. Step 6: Final answer
    x = 29,306,776.40

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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.