Home / 77,666.28-107,178.19-43,209.69

Finding the Fourth Proportional to 77,666.28, 107,178.19 and 43,209.69

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Solution

The fourth proportional to 77,666.28, 107,178.19 and 43,209.69 is: 59,628.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,666.28 : 107,178.19 = 43,209.69 : x
  2. Step 2: Convert to fraction form
    77,666.28/107,178.19 = 43,209.69/x
  3. Step 3: Cross multiply
    77,666.28x = 107,178.19 × 43,209.69
  4. Step 4: Simplify right side
    77,666.28x = 4,631,136,364.66
  5. Step 5: Solve for x
    x = 4,631,136,364.66/77,666.28
  6. Step 6: Final answer
    x = 59,628.66

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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.