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Finding the Fourth Proportional to 84,987.60, 127,477.35 and 28,822.20

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Solution

The fourth proportional to 84,987.60, 127,477.35 and 28,822.20 is: 43,231.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,987.60 : 127,477.35 = 28,822.20 : x
  2. Step 2: Convert to fraction form
    84,987.60/127,477.35 = 28,822.20/x
  3. Step 3: Cross multiply
    84,987.60x = 127,477.35 × 28,822.20
  4. Step 4: Simplify right side
    84,987.60x = 3,674,177,677.17
  5. Step 5: Solve for x
    x = 3,674,177,677.17/84,987.60
  6. Step 6: Final answer
    x = 43,231.93

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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.