Home / 53,563.04-80,315.12-42,540.32

Finding the Fourth Proportional to 53,563.04, 80,315.12 and 42,540.32

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Solution

The fourth proportional to 53,563.04, 80,315.12 and 42,540.32 is: 63,787.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,563.04 : 80,315.12 = 42,540.32 : x
  2. Step 2: Convert to fraction form
    53,563.04/80,315.12 = 42,540.32/x
  3. Step 3: Cross multiply
    53,563.04x = 80,315.12 × 42,540.32
  4. Step 4: Simplify right side
    53,563.04x = 3,416,630,905.64
  5. Step 5: Solve for x
    x = 3,416,630,905.64/53,563.04
  6. Step 6: Final answer
    x = 63,787.10

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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.