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Finding the Fourth Proportional to 88,434, 122,038.92 and 48,690

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Solution

The fourth proportional to 88,434, 122,038.92 and 48,690 is: 67,192.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,434 : 122,038.92 = 48,690 : x
  2. Step 2: Convert to fraction form
    88,434/122,038.92 = 48,690/x
  3. Step 3: Cross multiply
    88,434x = 122,038.92 × 48,690
  4. Step 4: Simplify right side
    88,434x = 5,942,075,014.80
  5. Step 5: Solve for x
    x = 5,942,075,014.80/88,434
  6. Step 6: Final answer
    x = 67,192.20

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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.