Home / 76,815.04-115,222.02-21,411.04

Finding the Fourth Proportional to 76,815.04, 115,222.02 and 21,411.04

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Solution

The fourth proportional to 76,815.04, 115,222.02 and 21,411.04 is: 32,116.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,815.04 : 115,222.02 = 21,411.04 : x
  2. Step 2: Convert to fraction form
    76,815.04/115,222.02 = 21,411.04/x
  3. Step 3: Cross multiply
    76,815.04x = 115,222.02 × 21,411.04
  4. Step 4: Simplify right side
    76,815.04x = 2,467,023,279.10
  5. Step 5: Solve for x
    x = 2,467,023,279.10/76,815.04
  6. Step 6: Final answer
    x = 32,116.41

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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.