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Finding the Fourth Proportional to 86,543.52, 129,473.80 and 65,544.26

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Solution

The fourth proportional to 86,543.52, 129,473.80 and 65,544.26 is: 98,057.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,543.52 : 129,473.80 = 65,544.26 : x
  2. Step 2: Convert to fraction form
    86,543.52/129,473.80 = 65,544.26/x
  3. Step 3: Cross multiply
    86,543.52x = 129,473.80 × 65,544.26
  4. Step 4: Simplify right side
    86,543.52x = 8,486,264,410.39
  5. Step 5: Solve for x
    x = 8,486,264,410.39/86,543.52
  6. Step 6: Final answer
    x = 98,057.77

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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.