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Finding the Fourth Proportional to 87,653.60, 131,566.80 and 43,330.40

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Solution

The fourth proportional to 87,653.60, 131,566.80 and 43,330.40 is: 65,038.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,653.60 : 131,566.80 = 43,330.40 : x
  2. Step 2: Convert to fraction form
    87,653.60/131,566.80 = 43,330.40/x
  3. Step 3: Cross multiply
    87,653.60x = 131,566.80 × 43,330.40
  4. Step 4: Simplify right side
    87,653.60x = 5,700,842,070.72
  5. Step 5: Solve for x
    x = 5,700,842,070.72/87,653.60
  6. Step 6: Final answer
    x = 65,038.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.