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Finding the Fourth Proportional to 84,807.78, 127,270 and 29,403.78

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Solution

The fourth proportional to 84,807.78, 127,270 and 29,403.78 is: 44,125.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,807.78 : 127,270 = 29,403.78 : x
  2. Step 2: Convert to fraction form
    84,807.78/127,270 = 29,403.78/x
  3. Step 3: Cross multiply
    84,807.78x = 127,270 × 29,403.78
  4. Step 4: Simplify right side
    84,807.78x = 3,742,219,080.60
  5. Step 5: Solve for x
    x = 3,742,219,080.60/84,807.78
  6. Step 6: Final answer
    x = 44,125.89

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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.