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Finding the Fourth Proportional to 93,435.28, 128,943.52 and 53,154.88

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Solution

The fourth proportional to 93,435.28, 128,943.52 and 53,154.88 is: 73,355.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,435.28 : 128,943.52 = 53,154.88 : x
  2. Step 2: Convert to fraction form
    93,435.28/128,943.52 = 53,154.88/x
  3. Step 3: Cross multiply
    93,435.28x = 128,943.52 × 53,154.88
  4. Step 4: Simplify right side
    93,435.28x = 6,853,977,332.38
  5. Step 5: Solve for x
    x = 6,853,977,332.38/93,435.28
  6. Step 6: Final answer
    x = 73,355.35

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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.