Home / 77,018.40-106,358.11-72,824.96

Finding the Fourth Proportional to 77,018.40, 106,358.11 and 72,824.96

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Solution

The fourth proportional to 77,018.40, 106,358.11 and 72,824.96 is: 100,567.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,018.40 : 106,358.11 = 72,824.96 : x
  2. Step 2: Convert to fraction form
    77,018.40/106,358.11 = 72,824.96/x
  3. Step 3: Cross multiply
    77,018.40x = 106,358.11 × 72,824.96
  4. Step 4: Simplify right side
    77,018.40x = 7,745,525,190.26
  5. Step 5: Solve for x
    x = 7,745,525,190.26/77,018.40
  6. Step 6: Final answer
    x = 100,567.20

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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.