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Finding the Fourth Proportional to 85,732.87, 118,310.08 and 47,492.30

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Solution

The fourth proportional to 85,732.87, 118,310.08 and 47,492.30 is: 65,538.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,732.87 : 118,310.08 = 47,492.30 : x
  2. Step 2: Convert to fraction form
    85,732.87/118,310.08 = 47,492.30/x
  3. Step 3: Cross multiply
    85,732.87x = 118,310.08 × 47,492.30
  4. Step 4: Simplify right side
    85,732.87x = 5,618,817,574.92
  5. Step 5: Solve for x
    x = 5,618,817,574.92/85,732.87
  6. Step 6: Final answer
    x = 65,538.66

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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.