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Finding the Fourth Proportional to 71,440.12, 98,612.88 and 48,762.88

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Solution

The fourth proportional to 71,440.12, 98,612.88 and 48,762.88 is: 67,310.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,440.12 : 98,612.88 = 48,762.88 : x
  2. Step 2: Convert to fraction form
    71,440.12/98,612.88 = 48,762.88/x
  3. Step 3: Cross multiply
    71,440.12x = 98,612.88 × 48,762.88
  4. Step 4: Simplify right side
    71,440.12x = 4,808,648,033.89
  5. Step 5: Solve for x
    x = 4,808,648,033.89/71,440.12
  6. Step 6: Final answer
    x = 67,310.19

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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.