Home / 77,605.04-107,107.84-45,781.76

Finding the Fourth Proportional to 77,605.04, 107,107.84 and 45,781.76

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Solution

The fourth proportional to 77,605.04, 107,107.84 and 45,781.76 is: 63,186.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,605.04 : 107,107.84 = 45,781.76 : x
  2. Step 2: Convert to fraction form
    77,605.04/107,107.84 = 45,781.76/x
  3. Step 3: Cross multiply
    77,605.04x = 107,107.84 × 45,781.76
  4. Step 4: Simplify right side
    77,605.04x = 4,903,585,425.00
  5. Step 5: Solve for x
    x = 4,903,585,425.00/77,605.04
  6. Step 6: Final answer
    x = 63,186.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.