Home / 72,143.46-99,556.05-40,312.62

Finding the Fourth Proportional to 72,143.46, 99,556.05 and 40,312.62

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Solution

The fourth proportional to 72,143.46, 99,556.05 and 40,312.62 is: 55,630.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,143.46 : 99,556.05 = 40,312.62 : x
  2. Step 2: Convert to fraction form
    72,143.46/99,556.05 = 40,312.62/x
  3. Step 3: Cross multiply
    72,143.46x = 99,556.05 × 40,312.62
  4. Step 4: Simplify right side
    72,143.46x = 4,013,365,212.35
  5. Step 5: Solve for x
    x = 4,013,365,212.35/72,143.46
  6. Step 6: Final answer
    x = 55,630.34

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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.