Home / 85,654.64-118,172.04-61,730.48

Finding the Fourth Proportional to 85,654.64, 118,172.04 and 61,730.48

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Solution

The fourth proportional to 85,654.64, 118,172.04 and 61,730.48 is: 85,165.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,654.64 : 118,172.04 = 61,730.48 : x
  2. Step 2: Convert to fraction form
    85,654.64/118,172.04 = 61,730.48/x
  3. Step 3: Cross multiply
    85,654.64x = 118,172.04 × 61,730.48
  4. Step 4: Simplify right side
    85,654.64x = 7,294,816,751.78
  5. Step 5: Solve for x
    x = 7,294,816,751.78/85,654.64
  6. Step 6: Final answer
    x = 85,165.46

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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.