Home / 72,207.45-99,648.23-40,374.45

Finding the Fourth Proportional to 72,207.45, 99,648.23 and 40,374.45

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Solution

The fourth proportional to 72,207.45, 99,648.23 and 40,374.45 is: 55,717.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,207.45 : 99,648.23 = 40,374.45 : x
  2. Step 2: Convert to fraction form
    72,207.45/99,648.23 = 40,374.45/x
  3. Step 3: Cross multiply
    72,207.45x = 99,648.23 × 40,374.45
  4. Step 4: Simplify right side
    72,207.45x = 4,023,242,277.85
  5. Step 5: Solve for x
    x = 4,023,242,277.85/72,207.45
  6. Step 6: Final answer
    x = 55,717.83

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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.