Home / 72,420.06-99,930.06-40,589.49

Finding the Fourth Proportional to 72,420.06, 99,930.06 and 40,589.49

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Solution

The fourth proportional to 72,420.06, 99,930.06 and 40,589.49 is: 56,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,420.06 : 99,930.06 = 40,589.49 : x
  2. Step 2: Convert to fraction form
    72,420.06/99,930.06 = 40,589.49/x
  3. Step 3: Cross multiply
    72,420.06x = 99,930.06 × 40,589.49
  4. Step 4: Simplify right side
    72,420.06x = 4,056,110,171.07
  5. Step 5: Solve for x
    x = 4,056,110,171.07/72,420.06
  6. Step 6: Final answer
    x = 56,008.10

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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.