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Finding the Fourth Proportional to 93,307.02, 128,662.05 and 63,039.78

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Solution

The fourth proportional to 93,307.02, 128,662.05 and 63,039.78 is: 86,926.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,307.02 : 128,662.05 = 63,039.78 : x
  2. Step 2: Convert to fraction form
    93,307.02/128,662.05 = 63,039.78/x
  3. Step 3: Cross multiply
    93,307.02x = 128,662.05 × 63,039.78
  4. Step 4: Simplify right side
    93,307.02x = 8,110,827,326.35
  5. Step 5: Solve for x
    x = 8,110,827,326.35/93,307.02
  6. Step 6: Final answer
    x = 86,926.23

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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.