Home / 86,419.04-119,280.48-56,279.48

Finding the Fourth Proportional to 86,419.04, 119,280.48 and 56,279.48

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Solution

The fourth proportional to 86,419.04, 119,280.48 and 56,279.48 is: 77,680.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,419.04 : 119,280.48 = 56,279.48 : x
  2. Step 2: Convert to fraction form
    86,419.04/119,280.48 = 56,279.48/x
  3. Step 3: Cross multiply
    86,419.04x = 119,280.48 × 56,279.48
  4. Step 4: Simplify right side
    86,419.04x = 6,713,043,388.55
  5. Step 5: Solve for x
    x = 6,713,043,388.55/86,419.04
  6. Step 6: Final answer
    x = 77,680.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.