Home / 57,012.89-78,670.95-31,515.81

Finding the Fourth Proportional to 57,012.89, 78,670.95 and 31,515.81

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Solution

The fourth proportional to 57,012.89, 78,670.95 and 31,515.81 is: 43,488.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,012.89 : 78,670.95 = 31,515.81 : x
  2. Step 2: Convert to fraction form
    57,012.89/78,670.95 = 31,515.81/x
  3. Step 3: Cross multiply
    57,012.89x = 78,670.95 × 31,515.81
  4. Step 4: Simplify right side
    57,012.89x = 2,479,378,712.72
  5. Step 5: Solve for x
    x = 2,479,378,712.72/57,012.89
  6. Step 6: Final answer
    x = 43,488.04

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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.