Home / 56,278.16-77,662.96-30,783.92

Finding the Fourth Proportional to 56,278.16, 77,662.96 and 30,783.92

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Solution

The fourth proportional to 56,278.16, 77,662.96 and 30,783.92 is: 42,481.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,278.16 : 77,662.96 = 30,783.92 : x
  2. Step 2: Convert to fraction form
    56,278.16/77,662.96 = 30,783.92/x
  3. Step 3: Cross multiply
    56,278.16x = 77,662.96 × 30,783.92
  4. Step 4: Simplify right side
    56,278.16x = 2,390,770,347.60
  5. Step 5: Solve for x
    x = 2,390,770,347.60/56,278.16
  6. Step 6: Final answer
    x = 42,481.32

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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.