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Finding the Fourth Proportional to 78,834.80, 118,252.20 and 56,802.80

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Solution

The fourth proportional to 78,834.80, 118,252.20 and 56,802.80 is: 85,204.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,834.80 : 118,252.20 = 56,802.80 : x
  2. Step 2: Convert to fraction form
    78,834.80/118,252.20 = 56,802.80/x
  3. Step 3: Cross multiply
    78,834.80x = 118,252.20 × 56,802.80
  4. Step 4: Simplify right side
    78,834.80x = 6,717,056,066.16
  5. Step 5: Solve for x
    x = 6,717,056,066.16/78,834.80
  6. Step 6: Final answer
    x = 85,204.20

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1.5x scale

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.