Home / 77,314.28-115,924.86-42,205.16

Finding the Fourth Proportional to 77,314.28, 115,924.86 and 42,205.16

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Solution

The fourth proportional to 77,314.28, 115,924.86 and 42,205.16 is: 63,282.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,314.28 : 115,924.86 = 42,205.16 : x
  2. Step 2: Convert to fraction form
    77,314.28/115,924.86 = 42,205.16/x
  3. Step 3: Cross multiply
    77,314.28x = 115,924.86 × 42,205.16
  4. Step 4: Simplify right side
    77,314.28x = 4,892,627,264.28
  5. Step 5: Solve for x
    x = 4,892,627,264.28/77,314.28
  6. Step 6: Final answer
    x = 63,282.32

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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.