Home / 86,988.11-130,700.86-55,412.37

Finding the Fourth Proportional to 86,988.11, 130,700.86 and 55,412.37

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Solution

The fourth proportional to 86,988.11, 130,700.86 and 55,412.37 is: 83,257.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,988.11 : 130,700.86 = 55,412.37 : x
  2. Step 2: Convert to fraction form
    86,988.11/130,700.86 = 55,412.37/x
  3. Step 3: Cross multiply
    86,988.11x = 130,700.86 × 55,412.37
  4. Step 4: Simplify right side
    86,988.11x = 7,242,444,275.11
  5. Step 5: Solve for x
    x = 7,242,444,275.11/86,988.11
  6. Step 6: Final answer
    x = 83,257.87

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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.