Home / 86,241.47-129,378.65-30,097.62

Finding the Fourth Proportional to 86,241.47, 129,378.65 and 30,097.62

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Solution

The fourth proportional to 86,241.47, 129,378.65 and 30,097.62 is: 45,152.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,241.47 : 129,378.65 = 30,097.62 : x
  2. Step 2: Convert to fraction form
    86,241.47/129,378.65 = 30,097.62/x
  3. Step 3: Cross multiply
    86,241.47x = 129,378.65 × 30,097.62
  4. Step 4: Simplify right side
    86,241.47x = 3,893,988,796.92
  5. Step 5: Solve for x
    x = 3,893,988,796.92/86,241.47
  6. Step 6: Final answer
    x = 45,152.16

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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.