Home / 91,776.22-137,664-51,777.06

Finding the Fourth Proportional to 91,776.22, 137,664 and 51,777.06

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Solution

The fourth proportional to 91,776.22, 137,664 and 51,777.06 is: 77,665.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,776.22 : 137,664 = 51,777.06 : x
  2. Step 2: Convert to fraction form
    91,776.22/137,664 = 51,777.06/x
  3. Step 3: Cross multiply
    91,776.22x = 137,664 × 51,777.06
  4. Step 4: Simplify right side
    91,776.22x = 7,127,837,187.84
  5. Step 5: Solve for x
    x = 7,127,837,187.84/91,776.22
  6. Step 6: Final answer
    x = 77,665.40

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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.