Home / 56,749.65-78,315.06-31,256.60

Finding the Fourth Proportional to 56,749.65, 78,315.06 and 31,256.60

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Solution

The fourth proportional to 56,749.65, 78,315.06 and 31,256.60 is: 43,134.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,749.65 : 78,315.06 = 31,256.60 : x
  2. Step 2: Convert to fraction form
    56,749.65/78,315.06 = 31,256.60/x
  3. Step 3: Cross multiply
    56,749.65x = 78,315.06 × 31,256.60
  4. Step 4: Simplify right side
    56,749.65x = 2,447,862,230.03
  5. Step 5: Solve for x
    x = 2,447,862,230.03/56,749.65
  6. Step 6: Final answer
    x = 43,134.40

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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.