Home / 91,784.49-126,426.61-64,880.75

Finding the Fourth Proportional to 91,784.49, 126,426.61 and 64,880.75

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Solution

The fourth proportional to 91,784.49, 126,426.61 and 64,880.75 is: 89,368.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,784.49 : 126,426.61 = 64,880.75 : x
  2. Step 2: Convert to fraction form
    91,784.49/126,426.61 = 64,880.75/x
  3. Step 3: Cross multiply
    91,784.49x = 126,426.61 × 64,880.75
  4. Step 4: Simplify right side
    91,784.49x = 8,202,652,597.82
  5. Step 5: Solve for x
    x = 8,202,652,597.82/91,784.49
  6. Step 6: Final answer
    x = 89,368.61

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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.