Home / 72,186.33-99,617.48-40,354.55

Finding the Fourth Proportional to 72,186.33, 99,617.48 and 40,354.55

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Solution

The fourth proportional to 72,186.33, 99,617.48 and 40,354.55 is: 55,689.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,186.33 : 99,617.48 = 40,354.55 : x
  2. Step 2: Convert to fraction form
    72,186.33/99,617.48 = 40,354.55/x
  3. Step 3: Cross multiply
    72,186.33x = 99,617.48 × 40,354.55
  4. Step 4: Simplify right side
    72,186.33x = 4,020,018,577.53
  5. Step 5: Solve for x
    x = 4,020,018,577.53/72,186.33
  6. Step 6: Final answer
    x = 55,689.47

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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.