Home / 51,119.59-70,548.45-30,978.45

Finding the Fourth Proportional to 51,119.59, 70,548.45 and 30,978.45

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Solution

The fourth proportional to 51,119.59, 70,548.45 and 30,978.45 is: 42,752.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,119.59 : 70,548.45 = 30,978.45 : x
  2. Step 2: Convert to fraction form
    51,119.59/70,548.45 = 30,978.45/x
  3. Step 3: Cross multiply
    51,119.59x = 70,548.45 × 30,978.45
  4. Step 4: Simplify right side
    51,119.59x = 2,185,481,688.99
  5. Step 5: Solve for x
    x = 2,185,481,688.99/51,119.59
  6. Step 6: Final answer
    x = 42,752.33

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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.