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Finding the Fourth Proportional to 76,228.80, 114,458.40 and 58,718.40

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Solution

The fourth proportional to 76,228.80, 114,458.40 and 58,718.40 is: 88,166.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,228.80 : 114,458.40 = 58,718.40 : x
  2. Step 2: Convert to fraction form
    76,228.80/114,458.40 = 58,718.40/x
  3. Step 3: Cross multiply
    76,228.80x = 114,458.40 × 58,718.40
  4. Step 4: Simplify right side
    76,228.80x = 6,720,814,114.56
  5. Step 5: Solve for x
    x = 6,720,814,114.56/76,228.80
  6. Step 6: Final answer
    x = 88,166.34

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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.