Home / 86,507.12-119,391.28-50,711.20

Finding the Fourth Proportional to 86,507.12, 119,391.28 and 50,711.20

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Solution

The fourth proportional to 86,507.12, 119,391.28 and 50,711.20 is: 69,988.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,507.12 : 119,391.28 = 50,711.20 : x
  2. Step 2: Convert to fraction form
    86,507.12/119,391.28 = 50,711.20/x
  3. Step 3: Cross multiply
    86,507.12x = 119,391.28 × 50,711.20
  4. Step 4: Simplify right side
    86,507.12x = 6,054,475,078.34
  5. Step 5: Solve for x
    x = 6,054,475,078.34/86,507.12
  6. Step 6: Final answer
    x = 69,988.17

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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.