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Finding the Fourth Proportional to 86,602.57, 129,803 and 36,666.07

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Solution

The fourth proportional to 86,602.57, 129,803 and 36,666.07 is: 54,956.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,602.57 : 129,803 = 36,666.07 : x
  2. Step 2: Convert to fraction form
    86,602.57/129,803 = 36,666.07/x
  3. Step 3: Cross multiply
    86,602.57x = 129,803 × 36,666.07
  4. Step 4: Simplify right side
    86,602.57x = 4,759,365,884.21
  5. Step 5: Solve for x
    x = 4,759,365,884.21/86,602.57
  6. Step 6: Final answer
    x = 54,956.40

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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.