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Finding the Fourth Proportional to 70,258.80, 96,959.64 and 40,048.68

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Solution

The fourth proportional to 70,258.80, 96,959.64 and 40,048.68 is: 55,268.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,258.80 : 96,959.64 = 40,048.68 : x
  2. Step 2: Convert to fraction form
    70,258.80/96,959.64 = 40,048.68/x
  3. Step 3: Cross multiply
    70,258.80x = 96,959.64 × 40,048.68
  4. Step 4: Simplify right side
    70,258.80x = 3,883,105,595.28
  5. Step 5: Solve for x
    x = 3,883,105,595.28/70,258.80
  6. Step 6: Final answer
    x = 55,268.60

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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.