Home / 57,011.54-78,675.40-31,518.56

Finding the Fourth Proportional to 57,011.54, 78,675.40 and 31,518.56

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Solution

The fourth proportional to 57,011.54, 78,675.40 and 31,518.56 is: 43,495.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,011.54 : 78,675.40 = 31,518.56 : x
  2. Step 2: Convert to fraction form
    57,011.54/78,675.40 = 31,518.56/x
  3. Step 3: Cross multiply
    57,011.54x = 78,675.40 × 31,518.56
  4. Step 4: Simplify right side
    57,011.54x = 2,479,735,315.42
  5. Step 5: Solve for x
    x = 2,479,735,315.42/57,011.54
  6. Step 6: Final answer
    x = 43,495.32

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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.