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Finding the Fourth Proportional to 70,166.64, 96,838.24 and 39,959.20

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Solution

The fourth proportional to 70,166.64, 96,838.24 and 39,959.20 is: 55,148.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,166.64 : 96,838.24 = 39,959.20 : x
  2. Step 2: Convert to fraction form
    70,166.64/96,838.24 = 39,959.20/x
  3. Step 3: Cross multiply
    70,166.64x = 96,838.24 × 39,959.20
  4. Step 4: Simplify right side
    70,166.64x = 3,869,578,599.81
  5. Step 5: Solve for x
    x = 3,869,578,599.81/70,166.64
  6. Step 6: Final answer
    x = 55,148.41

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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.