Home / 55,390.74-76,436.56-31,515.18

Finding the Fourth Proportional to 55,390.74, 76,436.56 and 31,515.18

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Solution

The fourth proportional to 55,390.74, 76,436.56 and 31,515.18 is: 43,489.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,390.74 : 76,436.56 = 31,515.18 : x
  2. Step 2: Convert to fraction form
    55,390.74/76,436.56 = 31,515.18/x
  3. Step 3: Cross multiply
    55,390.74x = 76,436.56 × 31,515.18
  4. Step 4: Simplify right side
    55,390.74x = 2,408,911,946.98
  5. Step 5: Solve for x
    x = 2,408,911,946.98/55,390.74
  6. Step 6: Final answer
    x = 43,489.43

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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.