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Finding the Fourth Proportional to 93,451.16, 128,962.56 and 51,009.71

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Solution

The fourth proportional to 93,451.16, 128,962.56 and 51,009.71 is: 70,393.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,451.16 : 128,962.56 = 51,009.71 : x
  2. Step 2: Convert to fraction form
    93,451.16/128,962.56 = 51,009.71/x
  3. Step 3: Cross multiply
    93,451.16x = 128,962.56 × 51,009.71
  4. Step 4: Simplify right side
    93,451.16x = 6,578,342,786.46
  5. Step 5: Solve for x
    x = 6,578,342,786.46/93,451.16
  6. Step 6: Final answer
    x = 70,393.38

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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.