Home / 87,946.96-121,382.40-66,690.40

Finding the Fourth Proportional to 87,946.96, 121,382.40 and 66,690.40

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Solution

The fourth proportional to 87,946.96, 121,382.40 and 66,690.40 is: 92,044.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,946.96 : 121,382.40 = 66,690.40 : x
  2. Step 2: Convert to fraction form
    87,946.96/121,382.40 = 66,690.40/x
  3. Step 3: Cross multiply
    87,946.96x = 121,382.40 × 66,690.40
  4. Step 4: Simplify right side
    87,946.96x = 8,095,040,808.96
  5. Step 5: Solve for x
    x = 8,095,040,808.96/87,946.96
  6. Step 6: Final answer
    x = 92,044.58

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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.