Home / 70,817.16-106,248.21-20,897.50

Finding the Fourth Proportional to 70,817.16, 106,248.21 and 20,897.50

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Solution

The fourth proportional to 70,817.16, 106,248.21 and 20,897.50 is: 31,352.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,817.16 : 106,248.21 = 20,897.50 : x
  2. Step 2: Convert to fraction form
    70,817.16/106,248.21 = 20,897.50/x
  3. Step 3: Cross multiply
    70,817.16x = 106,248.21 × 20,897.50
  4. Step 4: Simplify right side
    70,817.16x = 2,220,321,968.48
  5. Step 5: Solve for x
    x = 2,220,321,968.48/70,817.16
  6. Step 6: Final answer
    x = 31,352.88

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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.