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Finding the Fourth Proportional to 86,606.56, 130,117.20 and 55,502.56

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Solution

The fourth proportional to 86,606.56, 130,117.20 and 55,502.56 is: 83,386.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,606.56 : 130,117.20 = 55,502.56 : x
  2. Step 2: Convert to fraction form
    86,606.56/130,117.20 = 55,502.56/x
  3. Step 3: Cross multiply
    86,606.56x = 130,117.20 × 55,502.56
  4. Step 4: Simplify right side
    86,606.56x = 7,221,837,700.03
  5. Step 5: Solve for x
    x = 7,221,837,700.03/86,606.56
  6. Step 6: Final answer
    x = 83,386.73

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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.