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Finding the Fourth Proportional to 93,454.90, 128,963.25 and 53,164.87

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Solution

The fourth proportional to 93,454.90, 128,963.25 and 53,164.87 is: 73,364.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,454.90 : 128,963.25 = 53,164.87 : x
  2. Step 2: Convert to fraction form
    93,454.90/128,963.25 = 53,164.87/x
  3. Step 3: Cross multiply
    93,454.90x = 128,963.25 × 53,164.87
  4. Step 4: Simplify right side
    93,454.90x = 6,856,314,421.03
  5. Step 5: Solve for x
    x = 6,856,314,421.03/93,454.90
  6. Step 6: Final answer
    x = 73,364.95

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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.