Home / 76,441.06-105,485.10-42,451.70

Finding the Fourth Proportional to 76,441.06, 105,485.10 and 42,451.70

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Solution

The fourth proportional to 76,441.06, 105,485.10 and 42,451.70 is: 58,581.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,441.06 : 105,485.10 = 42,451.70 : x
  2. Step 2: Convert to fraction form
    76,441.06/105,485.10 = 42,451.70/x
  3. Step 3: Cross multiply
    76,441.06x = 105,485.10 × 42,451.70
  4. Step 4: Simplify right side
    76,441.06x = 4,478,021,819.67
  5. Step 5: Solve for x
    x = 4,478,021,819.67/76,441.06
  6. Step 6: Final answer
    x = 58,581.37

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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.