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Finding the Fourth Proportional to 79,312.78, 118,810.55 and 47,705.39

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Solution

The fourth proportional to 79,312.78, 118,810.55 and 47,705.39 is: 71,462.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,312.78 : 118,810.55 = 47,705.39 : x
  2. Step 2: Convert to fraction form
    79,312.78/118,810.55 = 47,705.39/x
  3. Step 3: Cross multiply
    79,312.78x = 118,810.55 × 47,705.39
  4. Step 4: Simplify right side
    79,312.78x = 5,667,903,594.61
  5. Step 5: Solve for x
    x = 5,667,903,594.61/79,312.78
  6. Step 6: Final answer
    x = 71,462.68

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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.