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Finding the Fourth Proportional to 70,880.85, 97,812.03 and 39,043.80

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Solution

The fourth proportional to 70,880.85, 97,812.03 and 39,043.80 is: 53,878.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,880.85 : 97,812.03 = 39,043.80 : x
  2. Step 2: Convert to fraction form
    70,880.85/97,812.03 = 39,043.80/x
  3. Step 3: Cross multiply
    70,880.85x = 97,812.03 × 39,043.80
  4. Step 4: Simplify right side
    70,880.85x = 3,818,953,336.91
  5. Step 5: Solve for x
    x = 3,818,953,336.91/70,880.85
  6. Step 6: Final answer
    x = 53,878.49

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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.