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Finding the Fourth Proportional to 84,877.98, 127,192.36 and 42,700.10

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Solution

The fourth proportional to 84,877.98, 127,192.36 and 42,700.10 is: 63,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,877.98 : 127,192.36 = 42,700.10 : x
  2. Step 2: Convert to fraction form
    84,877.98/127,192.36 = 42,700.10/x
  3. Step 3: Cross multiply
    84,877.98x = 127,192.36 × 42,700.10
  4. Step 4: Simplify right side
    84,877.98x = 5,431,125,828.59
  5. Step 5: Solve for x
    x = 5,431,125,828.59/84,877.98
  6. Step 6: Final answer
    x = 63,987.45

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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.