Home / 56,485.06-77,950.17-30,990.95

Finding the Fourth Proportional to 56,485.06, 77,950.17 and 30,990.95

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Solution

The fourth proportional to 56,485.06, 77,950.17 and 30,990.95 is: 42,767.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,485.06 : 77,950.17 = 30,990.95 : x
  2. Step 2: Convert to fraction form
    56,485.06/77,950.17 = 30,990.95/x
  3. Step 3: Cross multiply
    56,485.06x = 77,950.17 × 30,990.95
  4. Step 4: Simplify right side
    56,485.06x = 2,415,750,015.84
  5. Step 5: Solve for x
    x = 2,415,750,015.84/56,485.06
  6. Step 6: Final answer
    x = 42,767.95

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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.