Home / 90,945.84-136,437.66-38,355.78

Finding the Fourth Proportional to 90,945.84, 136,437.66 and 38,355.78

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Solution

The fourth proportional to 90,945.84, 136,437.66 and 38,355.78 is: 57,541.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,945.84 : 136,437.66 = 38,355.78 : x
  2. Step 2: Convert to fraction form
    90,945.84/136,437.66 = 38,355.78/x
  3. Step 3: Cross multiply
    90,945.84x = 136,437.66 × 38,355.78
  4. Step 4: Simplify right side
    90,945.84x = 5,233,172,870.67
  5. Step 5: Solve for x
    x = 5,233,172,870.67/90,945.84
  6. Step 6: Final answer
    x = 57,541.64

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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.