Home / 76,450.20-105,480.54-42,915.48

Finding the Fourth Proportional to 76,450.20, 105,480.54 and 42,915.48

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Solution

The fourth proportional to 76,450.20, 105,480.54 and 42,915.48 is: 59,211.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,450.20 : 105,480.54 = 42,915.48 : x
  2. Step 2: Convert to fraction form
    76,450.20/105,480.54 = 42,915.48/x
  3. Step 3: Cross multiply
    76,450.20x = 105,480.54 × 42,915.48
  4. Step 4: Simplify right side
    76,450.20x = 4,526,748,004.76
  5. Step 5: Solve for x
    x = 4,526,748,004.76/76,450.20
  6. Step 6: Final answer
    x = 59,211.72

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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.