Home / 72,178.50-99,606.33-40,346.73

Finding the Fourth Proportional to 72,178.50, 99,606.33 and 40,346.73

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Solution

The fourth proportional to 72,178.50, 99,606.33 and 40,346.73 is: 55,678.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,178.50 : 99,606.33 = 40,346.73 : x
  2. Step 2: Convert to fraction form
    72,178.50/99,606.33 = 40,346.73/x
  3. Step 3: Cross multiply
    72,178.50x = 99,606.33 × 40,346.73
  4. Step 4: Simplify right side
    72,178.50x = 4,018,789,702.80
  5. Step 5: Solve for x
    x = 4,018,789,702.80/72,178.50
  6. Step 6: Final answer
    x = 55,678.49

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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.