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Finding the Fourth Proportional to 93,428.64, 128,962.80 and 57,602.88

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Solution

The fourth proportional to 93,428.64, 128,962.80 and 57,602.88 is: 79,511.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,428.64 : 128,962.80 = 57,602.88 : x
  2. Step 2: Convert to fraction form
    93,428.64/128,962.80 = 57,602.88/x
  3. Step 3: Cross multiply
    93,428.64x = 128,962.80 × 57,602.88
  4. Step 4: Simplify right side
    93,428.64x = 7,428,628,692.86
  5. Step 5: Solve for x
    x = 7,428,628,692.86/93,428.64
  6. Step 6: Final answer
    x = 79,511.26

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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.