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Finding the Fourth Proportional to 93,327, 128,746.86 and 63,122.88

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Solution

The fourth proportional to 93,327, 128,746.86 and 63,122.88 is: 87,079.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,327 : 128,746.86 = 63,122.88 : x
  2. Step 2: Convert to fraction form
    93,327/128,746.86 = 63,122.88/x
  3. Step 3: Cross multiply
    93,327x = 128,746.86 × 63,122.88
  4. Step 4: Simplify right side
    93,327x = 8,126,872,594.16
  5. Step 5: Solve for x
    x = 8,126,872,594.16/93,327
  6. Step 6: Final answer
    x = 87,079.54

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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.