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Finding the Fourth Proportional to 85,885.90, 118,528.84 and 47,651.46

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Solution

The fourth proportional to 85,885.90, 118,528.84 and 47,651.46 is: 65,762.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,885.90 : 118,528.84 = 47,651.46 : x
  2. Step 2: Convert to fraction form
    85,885.90/118,528.84 = 47,651.46/x
  3. Step 3: Cross multiply
    85,885.90x = 118,528.84 × 47,651.46
  4. Step 4: Simplify right side
    85,885.90x = 5,648,072,278.11
  5. Step 5: Solve for x
    x = 5,648,072,278.11/85,885.90
  6. Step 6: Final answer
    x = 65,762.51

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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.