Home / 78,074.10-107,738.18-45,804.23

Finding the Fourth Proportional to 78,074.10, 107,738.18 and 45,804.23

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Solution

The fourth proportional to 78,074.10, 107,738.18 and 45,804.23 is: 63,207.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,074.10 : 107,738.18 = 45,804.23 : x
  2. Step 2: Convert to fraction form
    78,074.10/107,738.18 = 45,804.23/x
  3. Step 3: Cross multiply
    78,074.10x = 107,738.18 × 45,804.23
  4. Step 4: Simplify right side
    78,074.10x = 4,934,864,661.78
  5. Step 5: Solve for x
    x = 4,934,864,661.78/78,074.10
  6. Step 6: Final answer
    x = 63,207.45

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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.