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Finding the Fourth Proportional to 78,070.84, 117,124.92 and 25,480.42

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Solution

The fourth proportional to 78,070.84, 117,124.92 and 25,480.42 is: 38,226.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,070.84 : 117,124.92 = 25,480.42 : x
  2. Step 2: Convert to fraction form
    78,070.84/117,124.92 = 25,480.42/x
  3. Step 3: Cross multiply
    78,070.84x = 117,124.92 × 25,480.42
  4. Step 4: Simplify right side
    78,070.84x = 2,984,392,154.07
  5. Step 5: Solve for x
    x = 2,984,392,154.07/78,070.84
  6. Step 6: Final answer
    x = 38,226.72

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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.