Home / 91,956.84-126,912.16-56,139.18

Finding the Fourth Proportional to 91,956.84, 126,912.16 and 56,139.18

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Solution

The fourth proportional to 91,956.84, 126,912.16 and 56,139.18 is: 77,479.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,956.84 : 126,912.16 = 56,139.18 : x
  2. Step 2: Convert to fraction form
    91,956.84/126,912.16 = 56,139.18/x
  3. Step 3: Cross multiply
    91,956.84x = 126,912.16 × 56,139.18
  4. Step 4: Simplify right side
    91,956.84x = 7,124,744,594.43
  5. Step 5: Solve for x
    x = 7,124,744,594.43/91,956.84
  6. Step 6: Final answer
    x = 77,479.22

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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.