Home / 72,699.07-100,329.31-40,870.02

Finding the Fourth Proportional to 72,699.07, 100,329.31 and 40,870.02

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Solution

The fourth proportional to 72,699.07, 100,329.31 and 40,870.02 is: 56,403.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,699.07 : 100,329.31 = 40,870.02 : x
  2. Step 2: Convert to fraction form
    72,699.07/100,329.31 = 40,870.02/x
  3. Step 3: Cross multiply
    72,699.07x = 100,329.31 × 40,870.02
  4. Step 4: Simplify right side
    72,699.07x = 4,100,460,654.31
  5. Step 5: Solve for x
    x = 4,100,460,654.31/72,699.07
  6. Step 6: Final answer
    x = 56,403.21

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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.