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Finding the Fourth Proportional to 77,501.88, 115,950.67 and 67,938.28

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Solution

The fourth proportional to 77,501.88, 115,950.67 and 67,938.28 is: 101,642.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,501.88 : 115,950.67 = 67,938.28 : x
  2. Step 2: Convert to fraction form
    77,501.88/115,950.67 = 67,938.28/x
  3. Step 3: Cross multiply
    77,501.88x = 115,950.67 × 67,938.28
  4. Step 4: Simplify right side
    77,501.88x = 7,877,488,504.89
  5. Step 5: Solve for x
    x = 7,877,488,504.89/77,501.88
  6. Step 6: Final answer
    x = 101,642.55

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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.