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Finding the Fourth Proportional to 71,124.66, 98,148.24 and 40,905.18

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Solution

The fourth proportional to 71,124.66, 98,148.24 and 40,905.18 is: 56,446.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,124.66 : 98,148.24 = 40,905.18 : x
  2. Step 2: Convert to fraction form
    71,124.66/98,148.24 = 40,905.18/x
  3. Step 3: Cross multiply
    71,124.66x = 98,148.24 × 40,905.18
  4. Step 4: Simplify right side
    71,124.66x = 4,014,771,423.88
  5. Step 5: Solve for x
    x = 4,014,771,423.88/71,124.66
  6. Step 6: Final answer
    x = 56,446.97

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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.