Home / 56,769.84-78,345.96-31,619.28

Finding the Fourth Proportional to 56,769.84, 78,345.96 and 31,619.28

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Solution

The fourth proportional to 56,769.84, 78,345.96 and 31,619.28 is: 43,636.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,769.84 : 78,345.96 = 31,619.28 : x
  2. Step 2: Convert to fraction form
    56,769.84/78,345.96 = 31,619.28/x
  3. Step 3: Cross multiply
    56,769.84x = 78,345.96 × 31,619.28
  4. Step 4: Simplify right side
    56,769.84x = 2,477,242,846.11
  5. Step 5: Solve for x
    x = 2,477,242,846.11/56,769.84
  6. Step 6: Final answer
    x = 43,636.60

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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.