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Finding the Fourth Proportional to 57,807.40, 86,709.88 and 26,642.64

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Solution

The fourth proportional to 57,807.40, 86,709.88 and 26,642.64 is: 39,963.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,807.40 : 86,709.88 = 26,642.64 : x
  2. Step 2: Convert to fraction form
    57,807.40/86,709.88 = 26,642.64/x
  3. Step 3: Cross multiply
    57,807.40x = 86,709.88 × 26,642.64
  4. Step 4: Simplify right side
    57,807.40x = 2,310,180,117.28
  5. Step 5: Solve for x
    x = 2,310,180,117.28/57,807.40
  6. Step 6: Final answer
    x = 39,963.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.