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Finding the Fourth Proportional to 79,876.94, 119,752.27 and 39,875.39

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Solution

The fourth proportional to 79,876.94, 119,752.27 and 39,875.39 is: 59,781.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,876.94 : 119,752.27 = 39,875.39 : x
  2. Step 2: Convert to fraction form
    79,876.94/119,752.27 = 39,875.39/x
  3. Step 3: Cross multiply
    79,876.94x = 119,752.27 × 39,875.39
  4. Step 4: Simplify right side
    79,876.94x = 4,775,168,444.56
  5. Step 5: Solve for x
    x = 4,775,168,444.56/79,876.94
  6. Step 6: Final answer
    x = 59,781.57

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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.