Home / 53,905.16-80,857.20-38,421.20

Finding the Fourth Proportional to 53,905.16, 80,857.20 and 38,421.20

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Solution

The fourth proportional to 53,905.16, 80,857.20 and 38,421.20 is: 57,631.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,905.16 : 80,857.20 = 38,421.20 : x
  2. Step 2: Convert to fraction form
    53,905.16/80,857.20 = 38,421.20/x
  3. Step 3: Cross multiply
    53,905.16x = 80,857.20 × 38,421.20
  4. Step 4: Simplify right side
    53,905.16x = 3,106,630,652.64
  5. Step 5: Solve for x
    x = 3,106,630,652.64/53,905.16
  6. Step 6: Final answer
    x = 57,631.42

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1.5x scale

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.