Home / 56,628.09-78,145.11-31,134.43

Finding the Fourth Proportional to 56,628.09, 78,145.11 and 31,134.43

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Solution

The fourth proportional to 56,628.09, 78,145.11 and 31,134.43 is: 42,964.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,628.09 : 78,145.11 = 31,134.43 : x
  2. Step 2: Convert to fraction form
    56,628.09/78,145.11 = 31,134.43/x
  3. Step 3: Cross multiply
    56,628.09x = 78,145.11 × 31,134.43
  4. Step 4: Simplify right side
    56,628.09x = 2,433,003,261.77
  5. Step 5: Solve for x
    x = 2,433,003,261.77/56,628.09
  6. Step 6: Final answer
    x = 42,964.60

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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.