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Finding the Fourth Proportional to 93,250.77, 128,647.54 and 64,972.86

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Solution

The fourth proportional to 93,250.77, 128,647.54 and 64,972.86 is: 89,635.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,250.77 : 128,647.54 = 64,972.86 : x
  2. Step 2: Convert to fraction form
    93,250.77/128,647.54 = 64,972.86/x
  3. Step 3: Cross multiply
    93,250.77x = 128,647.54 × 64,972.86
  4. Step 4: Simplify right side
    93,250.77x = 8,358,598,605.76
  5. Step 5: Solve for x
    x = 8,358,598,605.76/93,250.77
  6. Step 6: Final answer
    x = 89,635.71

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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.