Home / 60,960.20-91,440.30-45,408.20

Finding the Fourth Proportional to 60,960.20, 91,440.30 and 45,408.20

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Solution

The fourth proportional to 60,960.20, 91,440.30 and 45,408.20 is: 68,112.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,960.20 : 91,440.30 = 45,408.20 : x
  2. Step 2: Convert to fraction form
    60,960.20/91,440.30 = 45,408.20/x
  3. Step 3: Cross multiply
    60,960.20x = 91,440.30 × 45,408.20
  4. Step 4: Simplify right side
    60,960.20x = 4,152,139,430.46
  5. Step 5: Solve for x
    x = 4,152,139,430.46/60,960.20
  6. Step 6: Final answer
    x = 68,112.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.