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Finding the Fourth Proportional to 91,248.40, 125,913.72 and 50,955.76

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Solution

The fourth proportional to 91,248.40, 125,913.72 and 50,955.76 is: 70,313.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,248.40 : 125,913.72 = 50,955.76 : x
  2. Step 2: Convert to fraction form
    91,248.40/125,913.72 = 50,955.76/x
  3. Step 3: Cross multiply
    91,248.40x = 125,913.72 × 50,955.76
  4. Step 4: Simplify right side
    91,248.40x = 6,416,029,297.03
  5. Step 5: Solve for x
    x = 6,416,029,297.03/91,248.40
  6. Step 6: Final answer
    x = 70,313.88

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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.