Home / 71,120.18-98,148.84-40,905.52

Finding the Fourth Proportional to 71,120.18, 98,148.84 and 40,905.52

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Solution

The fourth proportional to 71,120.18, 98,148.84 and 40,905.52 is: 56,451.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,120.18 : 98,148.84 = 40,905.52 : x
  2. Step 2: Convert to fraction form
    71,120.18/98,148.84 = 40,905.52/x
  3. Step 3: Cross multiply
    71,120.18x = 98,148.84 × 40,905.52
  4. Step 4: Simplify right side
    71,120.18x = 4,014,829,337.60
  5. Step 5: Solve for x
    x = 4,014,829,337.60/71,120.18
  6. Step 6: Final answer
    x = 56,451.34

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1.5x scale

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.