Home / 72,277.68-99,740.92-40,010.32

Finding the Fourth Proportional to 72,277.68, 99,740.92 and 40,010.32

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Solution

The fourth proportional to 72,277.68, 99,740.92 and 40,010.32 is: 55,212.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,277.68 : 99,740.92 = 40,010.32 : x
  2. Step 2: Convert to fraction form
    72,277.68/99,740.92 = 40,010.32/x
  3. Step 3: Cross multiply
    72,277.68x = 99,740.92 × 40,010.32
  4. Step 4: Simplify right side
    72,277.68x = 3,990,666,126.29
  5. Step 5: Solve for x
    x = 3,990,666,126.29/72,277.68
  6. Step 6: Final answer
    x = 55,212.98

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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.