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Finding the Fourth Proportional to 70,880.08, 97,828.64 and 40,685.80

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Solution

The fourth proportional to 70,880.08, 97,828.64 and 40,685.80 is: 56,154.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,880.08 : 97,828.64 = 40,685.80 : x
  2. Step 2: Convert to fraction form
    70,880.08/97,828.64 = 40,685.80/x
  3. Step 3: Cross multiply
    70,880.08x = 97,828.64 × 40,685.80
  4. Step 4: Simplify right side
    70,880.08x = 3,980,236,481.31
  5. Step 5: Solve for x
    x = 3,980,236,481.31/70,880.08
  6. Step 6: Final answer
    x = 56,154.51

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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.