Home / 51,909.12-77,868-31,263.84

Finding the Fourth Proportional to 51,909.12, 77,868 and 31,263.84

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Solution

The fourth proportional to 51,909.12, 77,868 and 31,263.84 is: 46,898.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,909.12 : 77,868 = 31,263.84 : x
  2. Step 2: Convert to fraction form
    51,909.12/77,868 = 31,263.84/x
  3. Step 3: Cross multiply
    51,909.12x = 77,868 × 31,263.84
  4. Step 4: Simplify right side
    51,909.12x = 2,434,452,693.12
  5. Step 5: Solve for x
    x = 2,434,452,693.12/51,909.12
  6. Step 6: Final answer
    x = 46,898.36

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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.