Home / 57,086.28-78,730.74-34,420.32

Finding the Fourth Proportional to 57,086.28, 78,730.74 and 34,420.32

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Solution

The fourth proportional to 57,086.28, 78,730.74 and 34,420.32 is: 47,470.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,086.28 : 78,730.74 = 34,420.32 : x
  2. Step 2: Convert to fraction form
    57,086.28/78,730.74 = 34,420.32/x
  3. Step 3: Cross multiply
    57,086.28x = 78,730.74 × 34,420.32
  4. Step 4: Simplify right side
    57,086.28x = 2,709,937,264.64
  5. Step 5: Solve for x
    x = 2,709,937,264.64/57,086.28
  6. Step 6: Final answer
    x = 47,470.90

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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.