Home / 77,126.12-115,557.15-42,090.38

Finding the Fourth Proportional to 77,126.12, 115,557.15 and 42,090.38

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Solution

The fourth proportional to 77,126.12, 115,557.15 and 42,090.38 is: 63,063.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,126.12 : 115,557.15 = 42,090.38 : x
  2. Step 2: Convert to fraction form
    77,126.12/115,557.15 = 42,090.38/x
  3. Step 3: Cross multiply
    77,126.12x = 115,557.15 × 42,090.38
  4. Step 4: Simplify right side
    77,126.12x = 4,863,844,355.22
  5. Step 5: Solve for x
    x = 4,863,844,355.22/77,126.12
  6. Step 6: Final answer
    x = 63,063.52

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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.