Home / 72,248.98-99,713.64-40,420.04

Finding the Fourth Proportional to 72,248.98, 99,713.64 and 40,420.04

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Solution

The fourth proportional to 72,248.98, 99,713.64 and 40,420.04 is: 55,785.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,248.98 : 99,713.64 = 40,420.04 : x
  2. Step 2: Convert to fraction form
    72,248.98/99,713.64 = 40,420.04/x
  3. Step 3: Cross multiply
    72,248.98x = 99,713.64 × 40,420.04
  4. Step 4: Simplify right side
    72,248.98x = 4,030,429,317.35
  5. Step 5: Solve for x
    x = 4,030,429,317.35/72,248.98
  6. Step 6: Final answer
    x = 55,785.28

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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.