Home / 77,072.68-115,422.15-53,313.56

Finding the Fourth Proportional to 77,072.68, 115,422.15 and 53,313.56

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Solution

The fourth proportional to 77,072.68, 115,422.15 and 53,313.56 is: 79,841.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,072.68 : 115,422.15 = 53,313.56 : x
  2. Step 2: Convert to fraction form
    77,072.68/115,422.15 = 53,313.56/x
  3. Step 3: Cross multiply
    77,072.68x = 115,422.15 × 53,313.56
  4. Step 4: Simplify right side
    77,072.68x = 6,153,565,719.35
  5. Step 5: Solve for x
    x = 6,153,565,719.35/77,072.68
  6. Step 6: Final answer
    x = 79,841.08

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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.