Home / 42,708.80-64,063.20-40,412.45

Finding the Fourth Proportional to 42,708.80, 64,063.20 and 40,412.45

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Solution

The fourth proportional to 42,708.80, 64,063.20 and 40,412.45 is: 60,618.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,708.80 : 64,063.20 = 40,412.45 : x
  2. Step 2: Convert to fraction form
    42,708.80/64,063.20 = 40,412.45/x
  3. Step 3: Cross multiply
    42,708.80x = 64,063.20 × 40,412.45
  4. Step 4: Simplify right side
    42,708.80x = 2,588,950,866.84
  5. Step 5: Solve for x
    x = 2,588,950,866.84/42,708.80
  6. Step 6: Final answer
    x = 60,618.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.