Home / 87,946.58-131,918.70-21,386.52

Finding the Fourth Proportional to 87,946.58, 131,918.70 and 21,386.52

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Solution

The fourth proportional to 87,946.58, 131,918.70 and 21,386.52 is: 32,079.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,946.58 : 131,918.70 = 21,386.52 : x
  2. Step 2: Convert to fraction form
    87,946.58/131,918.70 = 21,386.52/x
  3. Step 3: Cross multiply
    87,946.58x = 131,918.70 × 21,386.52
  4. Step 4: Simplify right side
    87,946.58x = 2,821,281,915.92
  5. Step 5: Solve for x
    x = 2,821,281,915.92/87,946.58
  6. Step 6: Final answer
    x = 32,079.50

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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.