Home / 76,220.88-105,385.44-66,762.32

Finding the Fourth Proportional to 76,220.88, 105,385.44 and 66,762.32

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Solution

The fourth proportional to 76,220.88, 105,385.44 and 66,762.32 is: 92,307.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,220.88 : 105,385.44 = 66,762.32 : x
  2. Step 2: Convert to fraction form
    76,220.88/105,385.44 = 66,762.32/x
  3. Step 3: Cross multiply
    76,220.88x = 105,385.44 × 66,762.32
  4. Step 4: Simplify right side
    76,220.88x = 7,035,776,468.62
  5. Step 5: Solve for x
    x = 7,035,776,468.62/76,220.88
  6. Step 6: Final answer
    x = 92,307.73

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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.