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Finding the Fourth Proportional to 85,220.10, 127,830.15 and 64,484.10

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Solution

The fourth proportional to 85,220.10, 127,830.15 and 64,484.10 is: 96,726.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,220.10 : 127,830.15 = 64,484.10 : x
  2. Step 2: Convert to fraction form
    85,220.10/127,830.15 = 64,484.10/x
  3. Step 3: Cross multiply
    85,220.10x = 127,830.15 × 64,484.10
  4. Step 4: Simplify right side
    85,220.10x = 8,243,012,175.62
  5. Step 5: Solve for x
    x = 8,243,012,175.62/85,220.10
  6. Step 6: Final answer
    x = 96,726.15

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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.