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Finding the Fourth Proportional to 93,060, 128,422.86 and 52,760.88

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Solution

The fourth proportional to 93,060, 128,422.86 and 52,760.88 is: 72,810.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,060 : 128,422.86 = 52,760.88 : x
  2. Step 2: Convert to fraction form
    93,060/128,422.86 = 52,760.88/x
  3. Step 3: Cross multiply
    93,060x = 128,422.86 × 52,760.88
  4. Step 4: Simplify right side
    93,060x = 6,775,703,105.72
  5. Step 5: Solve for x
    x = 6,775,703,105.72/93,060
  6. Step 6: Final answer
    x = 72,810.05

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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.