Home / 76,311.36-105,307.70-42,319.30

Finding the Fourth Proportional to 76,311.36, 105,307.70 and 42,319.30

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Solution

The fourth proportional to 76,311.36, 105,307.70 and 42,319.30 is: 58,399.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,311.36 : 105,307.70 = 42,319.30 : x
  2. Step 2: Convert to fraction form
    76,311.36/105,307.70 = 42,319.30/x
  3. Step 3: Cross multiply
    76,311.36x = 105,307.70 × 42,319.30
  4. Step 4: Simplify right side
    76,311.36x = 4,456,548,148.61
  5. Step 5: Solve for x
    x = 4,456,548,148.61/76,311.36
  6. Step 6: Final answer
    x = 58,399.54

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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.