Home / 87,681.42-120,971.81-53,654.40

Finding the Fourth Proportional to 87,681.42, 120,971.81 and 53,654.40

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Solution

The fourth proportional to 87,681.42, 120,971.81 and 53,654.40 is: 74,025.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,681.42 : 120,971.81 = 53,654.40 : x
  2. Step 2: Convert to fraction form
    87,681.42/120,971.81 = 53,654.40/x
  3. Step 3: Cross multiply
    87,681.42x = 120,971.81 × 53,654.40
  4. Step 4: Simplify right side
    87,681.42x = 6,490,670,016.60
  5. Step 5: Solve for x
    x = 6,490,670,016.60/87,681.42
  6. Step 6: Final answer
    x = 74,025.60

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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.