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Finding the Fourth Proportional to 84,798.04, 127,199.87 and 42,655.16

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Solution

The fourth proportional to 84,798.04, 127,199.87 and 42,655.16 is: 63,984.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,798.04 : 127,199.87 = 42,655.16 : x
  2. Step 2: Convert to fraction form
    84,798.04/127,199.87 = 42,655.16/x
  3. Step 3: Cross multiply
    84,798.04x = 127,199.87 × 42,655.16
  4. Step 4: Simplify right side
    84,798.04x = 5,425,730,356.01
  5. Step 5: Solve for x
    x = 5,425,730,356.01/84,798.04
  6. Step 6: Final answer
    x = 63,984.15

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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.