Home / 76,311.06-105,307.27-42,319.48

Finding the Fourth Proportional to 76,311.06, 105,307.27 and 42,319.48

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Solution

The fourth proportional to 76,311.06, 105,307.27 and 42,319.48 is: 58,399.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,311.06 : 105,307.27 = 42,319.48 : x
  2. Step 2: Convert to fraction form
    76,311.06/105,307.27 = 42,319.48/x
  3. Step 3: Cross multiply
    76,311.06x = 105,307.27 × 42,319.48
  4. Step 4: Simplify right side
    76,311.06x = 4,456,548,537.55
  5. Step 5: Solve for x
    x = 4,456,548,537.55/76,311.06
  6. Step 6: Final answer
    x = 58,399.77

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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.