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Finding the Fourth Proportional to 79,177.50, 109,261.75 and 47,363.98

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Solution

The fourth proportional to 79,177.50, 109,261.75 and 47,363.98 is: 65,360.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,177.50 : 109,261.75 = 47,363.98 : x
  2. Step 2: Convert to fraction form
    79,177.50/109,261.75 = 47,363.98/x
  3. Step 3: Cross multiply
    79,177.50x = 109,261.75 × 47,363.98
  4. Step 4: Simplify right side
    79,177.50x = 5,175,071,341.77
  5. Step 5: Solve for x
    x = 5,175,071,341.77/79,177.50
  6. Step 6: Final answer
    x = 65,360.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.