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Finding the Fourth Proportional to 85,068.80, 117,393.79 and 47,343.05

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Solution

The fourth proportional to 85,068.80, 117,393.79 and 47,343.05 is: 65,332.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,068.80 : 117,393.79 = 47,343.05 : x
  2. Step 2: Convert to fraction form
    85,068.80/117,393.79 = 47,343.05/x
  3. Step 3: Cross multiply
    85,068.80x = 117,393.79 × 47,343.05
  4. Step 4: Simplify right side
    85,068.80x = 5,557,780,069.66
  5. Step 5: Solve for x
    x = 5,557,780,069.66/85,068.80
  6. Step 6: Final answer
    x = 65,332.77

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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.