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Finding the Fourth Proportional to 84,970.88, 117,228.48 and 51,424.64

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Solution

The fourth proportional to 84,970.88, 117,228.48 and 51,424.64 is: 70,947.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,970.88 : 117,228.48 = 51,424.64 : x
  2. Step 2: Convert to fraction form
    84,970.88/117,228.48 = 51,424.64/x
  3. Step 3: Cross multiply
    84,970.88x = 117,228.48 × 51,424.64
  4. Step 4: Simplify right side
    84,970.88x = 6,028,432,381.75
  5. Step 5: Solve for x
    x = 6,028,432,381.75/84,970.88
  6. Step 6: Final answer
    x = 70,947.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.