Home / 78,590.46-108,457.26-42,782.85

Finding the Fourth Proportional to 78,590.46, 108,457.26 and 42,782.85

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Solution

The fourth proportional to 78,590.46, 108,457.26 and 42,782.85 is: 59,041.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,590.46 : 108,457.26 = 42,782.85 : x
  2. Step 2: Convert to fraction form
    78,590.46/108,457.26 = 42,782.85/x
  3. Step 3: Cross multiply
    78,590.46x = 108,457.26 × 42,782.85
  4. Step 4: Simplify right side
    78,590.46x = 4,640,110,685.99
  5. Step 5: Solve for x
    x = 4,640,110,685.99/78,590.46
  6. Step 6: Final answer
    x = 59,041.65

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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.