Home / 88,415.12-122,012.78-48,128.82

Finding the Fourth Proportional to 88,415.12, 122,012.78 and 48,128.82

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Solution

The fourth proportional to 88,415.12, 122,012.78 and 48,128.82 is: 66,417.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,415.12 : 122,012.78 = 48,128.82 : x
  2. Step 2: Convert to fraction form
    88,415.12/122,012.78 = 48,128.82/x
  3. Step 3: Cross multiply
    88,415.12x = 122,012.78 × 48,128.82
  4. Step 4: Simplify right side
    88,415.12x = 5,872,331,126.32
  5. Step 5: Solve for x
    x = 5,872,331,126.32/88,415.12
  6. Step 6: Final answer
    x = 66,417.73

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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.