Home / 70,021,581.32-105,047,987.16-21,504,331.82

Finding the Fourth Proportional to 70,021,581.32, 105,047,987.16 and 21,504,331.82

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Solution

The fourth proportional to 70,021,581.32, 105,047,987.16 and 21,504,331.82 is: 32,261,293.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,021,581.32 : 105,047,987.16 = 21,504,331.82 : x
  2. Step 2: Convert to fraction form
    70,021,581.32/105,047,987.16 = 21,504,331.82/x
  3. Step 3: Cross multiply
    70,021,581.32x = 105,047,987.16 × 21,504,331.82
  4. Step 4: Simplify right side
    70,021,581.32x = 2,258,986,772,911,739.50
  5. Step 5: Solve for x
    x = 2,258,986,772,911,739.50/70,021,581.32
  6. Step 6: Final answer
    x = 32,261,293.31

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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.