Home / 90,921.66-136,415.36-46,569.30

Finding the Fourth Proportional to 90,921.66, 136,415.36 and 46,569.30

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Solution

The fourth proportional to 90,921.66, 136,415.36 and 46,569.30 is: 69,870.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,921.66 : 136,415.36 = 46,569.30 : x
  2. Step 2: Convert to fraction form
    90,921.66/136,415.36 = 46,569.30/x
  3. Step 3: Cross multiply
    90,921.66x = 136,415.36 × 46,569.30
  4. Step 4: Simplify right side
    90,921.66x = 6,352,767,824.45
  5. Step 5: Solve for x
    x = 6,352,767,824.45/90,921.66
  6. Step 6: Final answer
    x = 69,870.79

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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.