Home / 78,890.79-118,292.45-26,271.57

Finding the Fourth Proportional to 78,890.79, 118,292.45 and 26,271.57

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Solution

The fourth proportional to 78,890.79, 118,292.45 and 26,271.57 is: 39,392.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,890.79 : 118,292.45 = 26,271.57 : x
  2. Step 2: Convert to fraction form
    78,890.79/118,292.45 = 26,271.57/x
  3. Step 3: Cross multiply
    78,890.79x = 118,292.45 × 26,271.57
  4. Step 4: Simplify right side
    78,890.79x = 3,107,728,249.29
  5. Step 5: Solve for x
    x = 3,107,728,249.29/78,890.79
  6. Step 6: Final answer
    x = 39,392.79

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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.