Home / 76,970.40-115,561.68-53,219.58

Finding the Fourth Proportional to 76,970.40, 115,561.68 and 53,219.58

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Solution

The fourth proportional to 76,970.40, 115,561.68 and 53,219.58 is: 79,902.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,970.40 : 115,561.68 = 53,219.58 : x
  2. Step 2: Convert to fraction form
    76,970.40/115,561.68 = 53,219.58/x
  3. Step 3: Cross multiply
    76,970.40x = 115,561.68 × 53,219.58
  4. Step 4: Simplify right side
    76,970.40x = 6,150,144,073.69
  5. Step 5: Solve for x
    x = 6,150,144,073.69/76,970.40
  6. Step 6: Final answer
    x = 79,902.72

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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.