Home / 78,000.72-116,988.66-21,834.78

Finding the Fourth Proportional to 78,000.72, 116,988.66 and 21,834.78

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Solution

The fourth proportional to 78,000.72, 116,988.66 and 21,834.78 is: 32,748.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,000.72 : 116,988.66 = 21,834.78 : x
  2. Step 2: Convert to fraction form
    78,000.72/116,988.66 = 21,834.78/x
  3. Step 3: Cross multiply
    78,000.72x = 116,988.66 × 21,834.78
  4. Step 4: Simplify right side
    78,000.72x = 2,554,421,653.59
  5. Step 5: Solve for x
    x = 2,554,421,653.59/78,000.72
  6. Step 6: Final answer
    x = 32,748.69

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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.