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Finding the Fourth Proportional to 55,693.94, 76,861.70 and 31,820.09

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Solution

The fourth proportional to 55,693.94, 76,861.70 and 31,820.09 is: 43,914.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,693.94 : 76,861.70 = 31,820.09 : x
  2. Step 2: Convert to fraction form
    55,693.94/76,861.70 = 31,820.09/x
  3. Step 3: Cross multiply
    55,693.94x = 76,861.70 × 31,820.09
  4. Step 4: Simplify right side
    55,693.94x = 2,445,746,483.26
  5. Step 5: Solve for x
    x = 2,445,746,483.26/55,693.94
  6. Step 6: Final answer
    x = 43,914.05

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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.