Home / 78,881.10-118,337.85-26,328.30

Finding the Fourth Proportional to 78,881.10, 118,337.85 and 26,328.30

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Solution

The fourth proportional to 78,881.10, 118,337.85 and 26,328.30 is: 39,497.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,881.10 : 118,337.85 = 26,328.30 : x
  2. Step 2: Convert to fraction form
    78,881.10/118,337.85 = 26,328.30/x
  3. Step 3: Cross multiply
    78,881.10x = 118,337.85 × 26,328.30
  4. Step 4: Simplify right side
    78,881.10x = 3,115,634,416.16
  5. Step 5: Solve for x
    x = 3,115,634,416.16/78,881.10
  6. Step 6: Final answer
    x = 39,497.86

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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.