Home / 72,379.22-99,885.29-40,547.43

Finding the Fourth Proportional to 72,379.22, 99,885.29 and 40,547.43

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Solution

The fourth proportional to 72,379.22, 99,885.29 and 40,547.43 is: 55,956.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,379.22 : 99,885.29 = 40,547.43 : x
  2. Step 2: Convert to fraction form
    72,379.22/99,885.29 = 40,547.43/x
  3. Step 3: Cross multiply
    72,379.22x = 99,885.29 × 40,547.43
  4. Step 4: Simplify right side
    72,379.22x = 4,050,091,601.57
  5. Step 5: Solve for x
    x = 4,050,091,601.57/72,379.22
  6. Step 6: Final answer
    x = 55,956.56

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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.