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Finding the Fourth Proportional to 70,276.84, 96,986.34 and 40,478.44

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Solution

The fourth proportional to 70,276.84, 96,986.34 and 40,478.44 is: 55,862.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,276.84 : 96,986.34 = 40,478.44 : x
  2. Step 2: Convert to fraction form
    70,276.84/96,986.34 = 40,478.44/x
  3. Step 3: Cross multiply
    70,276.84x = 96,986.34 × 40,478.44
  4. Step 4: Simplify right side
    70,276.84x = 3,925,855,744.51
  5. Step 5: Solve for x
    x = 3,925,855,744.51/70,276.84
  6. Step 6: Final answer
    x = 55,862.72

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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.