Home / 77,856.26-107,455.34-74,306.40

Finding the Fourth Proportional to 77,856.26, 107,455.34 and 74,306.40

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Solution

The fourth proportional to 77,856.26, 107,455.34 and 74,306.40 is: 102,555.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,856.26 : 107,455.34 = 74,306.40 : x
  2. Step 2: Convert to fraction form
    77,856.26/107,455.34 = 74,306.40/x
  3. Step 3: Cross multiply
    77,856.26x = 107,455.34 × 74,306.40
  4. Step 4: Simplify right side
    77,856.26x = 7,984,619,555.57
  5. Step 5: Solve for x
    x = 7,984,619,555.57/77,856.26
  6. Step 6: Final answer
    x = 102,555.91

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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.