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Finding the Fourth Proportional to 115,089.50, 158,827.80 and 63,408.70

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Solution

The fourth proportional to 115,089.50, 158,827.80 and 63,408.70 is: 87,506.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,089.50 : 158,827.80 = 63,408.70 : x
  2. Step 2: Convert to fraction form
    115,089.50/158,827.80 = 63,408.70/x
  3. Step 3: Cross multiply
    115,089.50x = 158,827.80 × 63,408.70
  4. Step 4: Simplify right side
    115,089.50x = 10,071,064,758.18
  5. Step 5: Solve for x
    x = 10,071,064,758.18/115,089.50
  6. Step 6: Final answer
    x = 87,506.37

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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.