Home / 72,420.58-99,934.86-40,583.32

Finding the Fourth Proportional to 72,420.58, 99,934.86 and 40,583.32

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Solution

The fourth proportional to 72,420.58, 99,934.86 and 40,583.32 is: 56,001.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,420.58 : 99,934.86 = 40,583.32 : x
  2. Step 2: Convert to fraction form
    72,420.58/99,934.86 = 40,583.32/x
  3. Step 3: Cross multiply
    72,420.58x = 99,934.86 × 40,583.32
  4. Step 4: Simplify right side
    72,420.58x = 4,055,688,402.54
  5. Step 5: Solve for x
    x = 4,055,688,402.54/72,420.58
  6. Step 6: Final answer
    x = 56,001.88

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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.