Home / 78,864.21-118,176.62-57,818.27

Finding the Fourth Proportional to 78,864.21, 118,176.62 and 57,818.27

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Solution

The fourth proportional to 78,864.21, 118,176.62 and 57,818.27 is: 86,639.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,864.21 : 118,176.62 = 57,818.27 : x
  2. Step 2: Convert to fraction form
    78,864.21/118,176.62 = 57,818.27/x
  3. Step 3: Cross multiply
    78,864.21x = 118,176.62 × 57,818.27
  4. Step 4: Simplify right side
    78,864.21x = 6,832,767,276.51
  5. Step 5: Solve for x
    x = 6,832,767,276.51/78,864.21
  6. Step 6: Final answer
    x = 86,639.65

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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.