Home / 72,382.16-99,897.93-40,553.21

Finding the Fourth Proportional to 72,382.16, 99,897.93 and 40,553.21

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Solution

The fourth proportional to 72,382.16, 99,897.93 and 40,553.21 is: 55,969.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,382.16 : 99,897.93 = 40,553.21 : x
  2. Step 2: Convert to fraction form
    72,382.16/99,897.93 = 40,553.21/x
  3. Step 3: Cross multiply
    72,382.16x = 99,897.93 × 40,553.21
  4. Step 4: Simplify right side
    72,382.16x = 4,051,181,733.86
  5. Step 5: Solve for x
    x = 4,051,181,733.86/72,382.16
  6. Step 6: Final answer
    x = 55,969.34

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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.