Home / 78,430.38-108,216.45-44,435.90

Finding the Fourth Proportional to 78,430.38, 108,216.45 and 44,435.90

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Solution

The fourth proportional to 78,430.38, 108,216.45 and 44,435.90 is: 61,311.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,430.38 : 108,216.45 = 44,435.90 : x
  2. Step 2: Convert to fraction form
    78,430.38/108,216.45 = 44,435.90/x
  3. Step 3: Cross multiply
    78,430.38x = 108,216.45 × 44,435.90
  4. Step 4: Simplify right side
    78,430.38x = 4,808,694,809.47
  5. Step 5: Solve for x
    x = 4,808,694,809.47/78,430.38
  6. Step 6: Final answer
    x = 61,311.63

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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.