Home / 72,542.85-100,118.54-40,711.76

Finding the Fourth Proportional to 72,542.85, 100,118.54 and 40,711.76

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Solution

The fourth proportional to 72,542.85, 100,118.54 and 40,711.76 is: 56,187.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,542.85 : 100,118.54 = 40,711.76 : x
  2. Step 2: Convert to fraction form
    72,542.85/100,118.54 = 40,711.76/x
  3. Step 3: Cross multiply
    72,542.85x = 100,118.54 × 40,711.76
  4. Step 4: Simplify right side
    72,542.85x = 4,076,001,267.88
  5. Step 5: Solve for x
    x = 4,076,001,267.88/72,542.85
  6. Step 6: Final answer
    x = 56,187.50

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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.