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Finding the Fourth Proportional to 93,178.69, 128,582.58 and 52,891.72

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Solution

The fourth proportional to 93,178.69, 128,582.58 and 52,891.72 is: 72,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,178.69 : 128,582.58 = 52,891.72 : x
  2. Step 2: Convert to fraction form
    93,178.69/128,582.58 = 52,891.72/x
  3. Step 3: Cross multiply
    93,178.69x = 128,582.58 × 52,891.72
  4. Step 4: Simplify right side
    93,178.69x = 6,800,953,818.24
  5. Step 5: Solve for x
    x = 6,800,953,818.24/93,178.69
  6. Step 6: Final answer
    x = 72,988.30

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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.