Home / 81,335.90-122,003.85-53,432.30

Finding the Fourth Proportional to 81,335.90, 122,003.85 and 53,432.30

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Solution

The fourth proportional to 81,335.90, 122,003.85 and 53,432.30 is: 80,148.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,335.90 : 122,003.85 = 53,432.30 : x
  2. Step 2: Convert to fraction form
    81,335.90/122,003.85 = 53,432.30/x
  3. Step 3: Cross multiply
    81,335.90x = 122,003.85 × 53,432.30
  4. Step 4: Simplify right side
    81,335.90x = 6,518,946,314.36
  5. Step 5: Solve for x
    x = 6,518,946,314.36/81,335.90
  6. Step 6: Final answer
    x = 80,148.45

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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.