Home / 55,014.90-75,920.79-31,146.18

Finding the Fourth Proportional to 55,014.90, 75,920.79 and 31,146.18

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Solution

The fourth proportional to 55,014.90, 75,920.79 and 31,146.18 is: 42,981.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,014.90 : 75,920.79 = 31,146.18 : x
  2. Step 2: Convert to fraction form
    55,014.90/75,920.79 = 31,146.18/x
  3. Step 3: Cross multiply
    55,014.90x = 75,920.79 × 31,146.18
  4. Step 4: Simplify right side
    55,014.90x = 2,364,642,591.08
  5. Step 5: Solve for x
    x = 2,364,642,591.08/55,014.90
  6. Step 6: Final answer
    x = 42,981.86

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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.