Home / 77,739.75-107,280.86-45,909.18

Finding the Fourth Proportional to 77,739.75, 107,280.86 and 45,909.18

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Solution

The fourth proportional to 77,739.75, 107,280.86 and 45,909.18 is: 63,354.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,739.75 : 107,280.86 = 45,909.18 : x
  2. Step 2: Convert to fraction form
    77,739.75/107,280.86 = 45,909.18/x
  3. Step 3: Cross multiply
    77,739.75x = 107,280.86 × 45,909.18
  4. Step 4: Simplify right side
    77,739.75x = 4,925,176,082.75
  5. Step 5: Solve for x
    x = 4,925,176,082.75/77,739.75
  6. Step 6: Final answer
    x = 63,354.67

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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.