Home / 56,121.37-77,448.63-30,970.87

Finding the Fourth Proportional to 56,121.37, 77,448.63 and 30,970.87

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Solution

The fourth proportional to 56,121.37, 77,448.63 and 30,970.87 is: 42,740.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,121.37 : 77,448.63 = 30,970.87 : x
  2. Step 2: Convert to fraction form
    56,121.37/77,448.63 = 30,970.87/x
  3. Step 3: Cross multiply
    56,121.37x = 77,448.63 × 30,970.87
  4. Step 4: Simplify right side
    56,121.37x = 2,398,651,451.41
  5. Step 5: Solve for x
    x = 2,398,651,451.41/56,121.37
  6. Step 6: Final answer
    x = 42,740.43

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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.