Home / 42,859.20-64,239.12-25,343.76

Finding the Fourth Proportional to 42,859.20, 64,239.12 and 25,343.76

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Solution

The fourth proportional to 42,859.20, 64,239.12 and 25,343.76 is: 37,986.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,859.20 : 64,239.12 = 25,343.76 : x
  2. Step 2: Convert to fraction form
    42,859.20/64,239.12 = 25,343.76/x
  3. Step 3: Cross multiply
    42,859.20x = 64,239.12 × 25,343.76
  4. Step 4: Simplify right side
    42,859.20x = 1,628,060,839.89
  5. Step 5: Solve for x
    x = 1,628,060,839.89/42,859.20
  6. Step 6: Final answer
    x = 37,986.26

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1.5x scale

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.