Home / 78,815.04-118,285.60-41,397.18

Finding the Fourth Proportional to 78,815.04, 118,285.60 and 41,397.18

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Solution

The fourth proportional to 78,815.04, 118,285.60 and 41,397.18 is: 62,128.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,815.04 : 118,285.60 = 41,397.18 : x
  2. Step 2: Convert to fraction form
    78,815.04/118,285.60 = 41,397.18/x
  3. Step 3: Cross multiply
    78,815.04x = 118,285.60 × 41,397.18
  4. Step 4: Simplify right side
    78,815.04x = 4,896,689,979.81
  5. Step 5: Solve for x
    x = 4,896,689,979.81/78,815.04
  6. Step 6: Final answer
    x = 62,128.88

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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.