Home / 86,368.05-129,259.46-53,109.18

Finding the Fourth Proportional to 86,368.05, 129,259.46 and 53,109.18

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Solution

The fourth proportional to 86,368.05, 129,259.46 and 53,109.18 is: 79,483.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,368.05 : 129,259.46 = 53,109.18 : x
  2. Step 2: Convert to fraction form
    86,368.05/129,259.46 = 53,109.18/x
  3. Step 3: Cross multiply
    86,368.05x = 129,259.46 × 53,109.18
  4. Step 4: Simplify right side
    86,368.05x = 6,864,864,060.62
  5. Step 5: Solve for x
    x = 6,864,864,060.62/86,368.05
  6. Step 6: Final answer
    x = 79,483.84

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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.