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Finding the Fourth Proportional to 93,520, 129,040.48 and 53,231.40

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Solution

The fourth proportional to 93,520, 129,040.48 and 53,231.40 is: 73,449.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,520 : 129,040.48 = 53,231.40 : x
  2. Step 2: Convert to fraction form
    93,520/129,040.48 = 53,231.40/x
  3. Step 3: Cross multiply
    93,520x = 129,040.48 × 53,231.40
  4. Step 4: Simplify right side
    93,520x = 6,869,005,407.07
  5. Step 5: Solve for x
    x = 6,869,005,407.07/93,520
  6. Step 6: Final answer
    x = 73,449.59

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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.