Home / 78,664.02-108,450.21-76,217.94

Finding the Fourth Proportional to 78,664.02, 108,450.21 and 76,217.94

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Solution

The fourth proportional to 78,664.02, 108,450.21 and 76,217.94 is: 105,077.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,664.02 : 108,450.21 = 76,217.94 : x
  2. Step 2: Convert to fraction form
    78,664.02/108,450.21 = 76,217.94/x
  3. Step 3: Cross multiply
    78,664.02x = 108,450.21 × 76,217.94
  4. Step 4: Simplify right side
    78,664.02x = 8,265,851,598.77
  5. Step 5: Solve for x
    x = 8,265,851,598.77/78,664.02
  6. Step 6: Final answer
    x = 105,077.92

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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.