Home / 56,718.74-78,270.53-31,567.70

Finding the Fourth Proportional to 56,718.74, 78,270.53 and 31,567.70

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Solution

The fourth proportional to 56,718.74, 78,270.53 and 31,567.70 is: 43,562.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,718.74 : 78,270.53 = 31,567.70 : x
  2. Step 2: Convert to fraction form
    56,718.74/78,270.53 = 31,567.70/x
  3. Step 3: Cross multiply
    56,718.74x = 78,270.53 × 31,567.70
  4. Step 4: Simplify right side
    56,718.74x = 2,470,820,609.88
  5. Step 5: Solve for x
    x = 2,470,820,609.88/56,718.74
  6. Step 6: Final answer
    x = 43,562.69

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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.