Home / 56,624.84-78,140.29-31,131.02

Finding the Fourth Proportional to 56,624.84, 78,140.29 and 31,131.02

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Solution

The fourth proportional to 56,624.84, 78,140.29 and 31,131.02 is: 42,959.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,624.84 : 78,140.29 = 31,131.02 : x
  2. Step 2: Convert to fraction form
    56,624.84/78,140.29 = 31,131.02/x
  3. Step 3: Cross multiply
    56,624.84x = 78,140.29 × 31,131.02
  4. Step 4: Simplify right side
    56,624.84x = 2,432,586,775.14
  5. Step 5: Solve for x
    x = 2,432,586,775.14/56,624.84
  6. Step 6: Final answer
    x = 42,959.71

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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.