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Finding the Fourth Proportional to 86,984.94, 130,508.50 and 53,666.22

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Solution

The fourth proportional to 86,984.94, 130,508.50 and 53,666.22 is: 80,518.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,984.94 : 130,508.50 = 53,666.22 : x
  2. Step 2: Convert to fraction form
    86,984.94/130,508.50 = 53,666.22/x
  3. Step 3: Cross multiply
    86,984.94x = 130,508.50 × 53,666.22
  4. Step 4: Simplify right side
    86,984.94x = 7,003,897,872.87
  5. Step 5: Solve for x
    x = 7,003,897,872.87/86,984.94
  6. Step 6: Final answer
    x = 80,518.51

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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.