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Finding the Fourth Proportional to 93,448.80, 128,962.40 and 51,009.60

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Solution

The fourth proportional to 93,448.80, 128,962.40 and 51,009.60 is: 70,394.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,448.80 : 128,962.40 = 51,009.60 : x
  2. Step 2: Convert to fraction form
    93,448.80/128,962.40 = 51,009.60/x
  3. Step 3: Cross multiply
    93,448.80x = 128,962.40 × 51,009.60
  4. Step 4: Simplify right side
    93,448.80x = 6,578,320,439.04
  5. Step 5: Solve for x
    x = 6,578,320,439.04/93,448.80
  6. Step 6: Final answer
    x = 70,394.92

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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.