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Finding the Fourth Proportional to 79,355.66, 118,988.35 and 61,337.50

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Solution

The fourth proportional to 79,355.66, 118,988.35 and 61,337.50 is: 91,971.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,355.66 : 118,988.35 = 61,337.50 : x
  2. Step 2: Convert to fraction form
    79,355.66/118,988.35 = 61,337.50/x
  3. Step 3: Cross multiply
    79,355.66x = 118,988.35 × 61,337.50
  4. Step 4: Simplify right side
    79,355.66x = 7,298,447,467.31
  5. Step 5: Solve for x
    x = 7,298,447,467.31/79,355.66
  6. Step 6: Final answer
    x = 91,971.36

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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.