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Finding the Fourth Proportional to 86,860.71, 130,045.29 and 55,192.28

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Solution

The fourth proportional to 86,860.71, 130,045.29 and 55,192.28 is: 82,632.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,860.71 : 130,045.29 = 55,192.28 : x
  2. Step 2: Convert to fraction form
    86,860.71/130,045.29 = 55,192.28/x
  3. Step 3: Cross multiply
    86,860.71x = 130,045.29 × 55,192.28
  4. Step 4: Simplify right side
    86,860.71x = 7,177,495,408.13
  5. Step 5: Solve for x
    x = 7,177,495,408.13/86,860.71
  6. Step 6: Final answer
    x = 82,632.24

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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.