Home / 57,188.05-78,918.55-31,346.35

Finding the Fourth Proportional to 57,188.05, 78,918.55 and 31,346.35

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Solution

The fourth proportional to 57,188.05, 78,918.55 and 31,346.35 is: 43,257.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,188.05 : 78,918.55 = 31,346.35 : x
  2. Step 2: Convert to fraction form
    57,188.05/78,918.55 = 31,346.35/x
  3. Step 3: Cross multiply
    57,188.05x = 78,918.55 × 31,346.35
  4. Step 4: Simplify right side
    57,188.05x = 2,473,808,489.79
  5. Step 5: Solve for x
    x = 2,473,808,489.79/57,188.05
  6. Step 6: Final answer
    x = 43,257.44

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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.