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Finding the Fourth Proportional to 70,214.40, 96,917.76 and 57,772.80

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Solution

The fourth proportional to 70,214.40, 96,917.76 and 57,772.80 is: 79,744.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,214.40 : 96,917.76 = 57,772.80 : x
  2. Step 2: Convert to fraction form
    70,214.40/96,917.76 = 57,772.80/x
  3. Step 3: Cross multiply
    70,214.40x = 96,917.76 × 57,772.80
  4. Step 4: Simplify right side
    70,214.40x = 5,599,210,364.93
  5. Step 5: Solve for x
    x = 5,599,210,364.93/70,214.40
  6. Step 6: Final answer
    x = 79,744.47

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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.