Home / 91,785.49-126,427.98-64,881.75

Finding the Fourth Proportional to 91,785.49, 126,427.98 and 64,881.75

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Solution

The fourth proportional to 91,785.49, 126,427.98 and 64,881.75 is: 89,369.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,785.49 : 126,427.98 = 64,881.75 : x
  2. Step 2: Convert to fraction form
    91,785.49/126,427.98 = 64,881.75/x
  3. Step 3: Cross multiply
    91,785.49x = 126,427.98 × 64,881.75
  4. Step 4: Simplify right side
    91,785.49x = 8,202,868,591.37
  5. Step 5: Solve for x
    x = 8,202,868,591.37/91,785.49
  6. Step 6: Final answer
    x = 89,369.99

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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.