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Finding the Fourth Proportional to 88,615.81, 122,220.70 and 56,787.67

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Solution

The fourth proportional to 88,615.81, 122,220.70 and 56,787.67 is: 78,322.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,615.81 : 122,220.70 = 56,787.67 : x
  2. Step 2: Convert to fraction form
    88,615.81/122,220.70 = 56,787.67/x
  3. Step 3: Cross multiply
    88,615.81x = 122,220.70 × 56,787.67
  4. Step 4: Simplify right side
    88,615.81x = 6,940,628,778.77
  5. Step 5: Solve for x
    x = 6,940,628,778.77/88,615.81
  6. Step 6: Final answer
    x = 78,322.69

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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.