Home / 84,985.20-127,472.40-28,825.20

Finding the Fourth Proportional to 84,985.20, 127,472.40 and 28,825.20

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Solution

The fourth proportional to 84,985.20, 127,472.40 and 28,825.20 is: 43,235.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,985.20 : 127,472.40 = 28,825.20 : x
  2. Step 2: Convert to fraction form
    84,985.20/127,472.40 = 28,825.20/x
  3. Step 3: Cross multiply
    84,985.20x = 127,472.40 × 28,825.20
  4. Step 4: Simplify right side
    84,985.20x = 3,674,417,424.48
  5. Step 5: Solve for x
    x = 3,674,417,424.48/84,985.20
  6. Step 6: Final answer
    x = 43,235.97

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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.