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Finding the Fourth Proportional to 71,903.08, 99,223.50 and 40,070.44

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Solution

The fourth proportional to 71,903.08, 99,223.50 and 40,070.44 is: 55,295.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,903.08 : 99,223.50 = 40,070.44 : x
  2. Step 2: Convert to fraction form
    71,903.08/99,223.50 = 40,070.44/x
  3. Step 3: Cross multiply
    71,903.08x = 99,223.50 × 40,070.44
  4. Step 4: Simplify right side
    71,903.08x = 3,975,929,303.34
  5. Step 5: Solve for x
    x = 3,975,929,303.34/71,903.08
  6. Step 6: Final answer
    x = 55,295.67

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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.