Home / 78,209.34-117,312.79-19,044.91

Finding the Fourth Proportional to 78,209.34, 117,312.79 and 19,044.91

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Solution

The fourth proportional to 78,209.34, 117,312.79 and 19,044.91 is: 28,567.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,209.34 : 117,312.79 = 19,044.91 : x
  2. Step 2: Convert to fraction form
    78,209.34/117,312.79 = 19,044.91/x
  3. Step 3: Cross multiply
    78,209.34x = 117,312.79 × 19,044.91
  4. Step 4: Simplify right side
    78,209.34x = 2,234,211,527.40
  5. Step 5: Solve for x
    x = 2,234,211,527.40/78,209.34
  6. Step 6: Final answer
    x = 28,567.07

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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.