Home / 74,341.90-102,590.20-40,350.45

Finding the Fourth Proportional to 74,341.90, 102,590.20 and 40,350.45

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Solution

The fourth proportional to 74,341.90, 102,590.20 and 40,350.45 is: 55,682.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,341.90 : 102,590.20 = 40,350.45 : x
  2. Step 2: Convert to fraction form
    74,341.90/102,590.20 = 40,350.45/x
  3. Step 3: Cross multiply
    74,341.90x = 102,590.20 × 40,350.45
  4. Step 4: Simplify right side
    74,341.90x = 4,139,560,943.77
  5. Step 5: Solve for x
    x = 4,139,560,943.77/74,341.90
  6. Step 6: Final answer
    x = 55,682.74

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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.