Home / 78,048.88-107,707.44-42,238.90

Finding the Fourth Proportional to 78,048.88, 107,707.44 and 42,238.90

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Solution

The fourth proportional to 78,048.88, 107,707.44 and 42,238.90 is: 58,289.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,048.88 : 107,707.44 = 42,238.90 : x
  2. Step 2: Convert to fraction form
    78,048.88/107,707.44 = 42,238.90/x
  3. Step 3: Cross multiply
    78,048.88x = 107,707.44 × 42,238.90
  4. Step 4: Simplify right side
    78,048.88x = 4,549,443,474.59
  5. Step 5: Solve for x
    x = 4,549,443,474.59/78,048.88
  6. Step 6: Final answer
    x = 58,289.67

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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.