Home / 30,982,110.96-42,764,317.02-20,668,808.64

Finding the Fourth Proportional to 30,982,110.96, 42,764,317.02 and 20,668,808.64

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Solution

The fourth proportional to 30,982,110.96, 42,764,317.02 and 20,668,808.64 is: 28,528,962.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,982,110.96 : 42,764,317.02 = 20,668,808.64 : x
  2. Step 2: Convert to fraction form
    30,982,110.96/42,764,317.02 = 20,668,808.64/x
  3. Step 3: Cross multiply
    30,982,110.96x = 42,764,317.02 × 20,668,808.64
  4. Step 4: Simplify right side
    30,982,110.96x = 883,887,485,106,675.12
  5. Step 5: Solve for x
    x = 883,887,485,106,675.12/30,982,110.96
  6. Step 6: Final answer
    x = 28,528,962.61

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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.