Home / 91,955.84-126,910.78-56,138.18

Finding the Fourth Proportional to 91,955.84, 126,910.78 and 56,138.18

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Solution

The fourth proportional to 91,955.84, 126,910.78 and 56,138.18 is: 77,477.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,955.84 : 126,910.78 = 56,138.18 : x
  2. Step 2: Convert to fraction form
    91,955.84/126,910.78 = 56,138.18/x
  3. Step 3: Cross multiply
    91,955.84x = 126,910.78 × 56,138.18
  4. Step 4: Simplify right side
    91,955.84x = 7,124,539,436.68
  5. Step 5: Solve for x
    x = 7,124,539,436.68/91,955.84
  6. Step 6: Final answer
    x = 77,477.84

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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.