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Finding the Fourth Proportional to 70,880.40, 97,818.30 and 40,255.74

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Solution

The fourth proportional to 70,880.40, 97,818.30 and 40,255.74 is: 55,554.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,880.40 : 97,818.30 = 40,255.74 : x
  2. Step 2: Convert to fraction form
    70,880.40/97,818.30 = 40,255.74/x
  3. Step 3: Cross multiply
    70,880.40x = 97,818.30 × 40,255.74
  4. Step 4: Simplify right side
    70,880.40x = 3,937,748,052.04
  5. Step 5: Solve for x
    x = 3,937,748,052.04/70,880.40
  6. Step 6: Final answer
    x = 55,554.82

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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.