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Finding the Fourth Proportional to 85,354.32, 117,803.34 and 49,574.28

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Solution

The fourth proportional to 85,354.32, 117,803.34 and 49,574.28 is: 68,420.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,354.32 : 117,803.34 = 49,574.28 : x
  2. Step 2: Convert to fraction form
    85,354.32/117,803.34 = 49,574.28/x
  3. Step 3: Cross multiply
    85,354.32x = 117,803.34 × 49,574.28
  4. Step 4: Simplify right side
    85,354.32x = 5,840,015,762.10
  5. Step 5: Solve for x
    x = 5,840,015,762.10/85,354.32
  6. Step 6: Final answer
    x = 68,420.86

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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.