Home / 74,823.40-112,364.70-72,490.60

Finding the Fourth Proportional to 74,823.40, 112,364.70 and 72,490.60

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Solution

The fourth proportional to 74,823.40, 112,364.70 and 72,490.60 is: 108,861.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,823.40 : 112,364.70 = 72,490.60 : x
  2. Step 2: Convert to fraction form
    74,823.40/112,364.70 = 72,490.60/x
  3. Step 3: Cross multiply
    74,823.40x = 112,364.70 × 72,490.60
  4. Step 4: Simplify right side
    74,823.40x = 8,145,384,521.82
  5. Step 5: Solve for x
    x = 8,145,384,521.82/74,823.40
  6. Step 6: Final answer
    x = 108,861.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.