Home / 52,639.12-78,890.64-39,387.52

Finding the Fourth Proportional to 52,639.12, 78,890.64 and 39,387.52

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Solution

The fourth proportional to 52,639.12, 78,890.64 and 39,387.52 is: 59,030.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,639.12 : 78,890.64 = 39,387.52 : x
  2. Step 2: Convert to fraction form
    52,639.12/78,890.64 = 39,387.52/x
  3. Step 3: Cross multiply
    52,639.12x = 78,890.64 × 39,387.52
  4. Step 4: Simplify right side
    52,639.12x = 3,107,306,660.81
  5. Step 5: Solve for x
    x = 3,107,306,660.81/52,639.12
  6. Step 6: Final answer
    x = 59,030.37

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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.