Home / 97,420.50-134,440.38-54,978.12

Finding the Fourth Proportional to 97,420.50, 134,440.38 and 54,978.12

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Solution

The fourth proportional to 97,420.50, 134,440.38 and 54,978.12 is: 75,869.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,420.50 : 134,440.38 = 54,978.12 : x
  2. Step 2: Convert to fraction form
    97,420.50/134,440.38 = 54,978.12/x
  3. Step 3: Cross multiply
    97,420.50x = 134,440.38 × 54,978.12
  4. Step 4: Simplify right side
    97,420.50x = 7,391,279,344.49
  5. Step 5: Solve for x
    x = 7,391,279,344.49/97,420.50
  6. Step 6: Final answer
    x = 75,869.86

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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.