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Finding the Fourth Proportional to 93,143.72, 128,541.48 and 52,859.36

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Solution

The fourth proportional to 93,143.72, 128,541.48 and 52,859.36 is: 72,947.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,143.72 : 128,541.48 = 52,859.36 : x
  2. Step 2: Convert to fraction form
    93,143.72/128,541.48 = 52,859.36/x
  3. Step 3: Cross multiply
    93,143.72x = 128,541.48 × 52,859.36
  4. Step 4: Simplify right side
    93,143.72x = 6,794,620,366.25
  5. Step 5: Solve for x
    x = 6,794,620,366.25/93,143.72
  6. Step 6: Final answer
    x = 72,947.70

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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.