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Finding the Fourth Proportional to 93,412.92, 128,908.62 and 50,970.72

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Solution

The fourth proportional to 93,412.92, 128,908.62 and 50,970.72 is: 70,338.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,412.92 : 128,908.62 = 50,970.72 : x
  2. Step 2: Convert to fraction form
    93,412.92/128,908.62 = 50,970.72/x
  3. Step 3: Cross multiply
    93,412.92x = 128,908.62 × 50,970.72
  4. Step 4: Simplify right side
    93,412.92x = 6,570,565,175.61
  5. Step 5: Solve for x
    x = 6,570,565,175.61/93,412.92
  6. Step 6: Final answer
    x = 70,338.93

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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.