Home / 51,347.40-77,078.70-39,712.20

Finding the Fourth Proportional to 51,347.40, 77,078.70 and 39,712.20

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Solution

The fourth proportional to 51,347.40, 77,078.70 and 39,712.20 is: 59,612.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,347.40 : 77,078.70 = 39,712.20 : x
  2. Step 2: Convert to fraction form
    51,347.40/77,078.70 = 39,712.20/x
  3. Step 3: Cross multiply
    51,347.40x = 77,078.70 × 39,712.20
  4. Step 4: Simplify right side
    51,347.40x = 3,060,964,750.14
  5. Step 5: Solve for x
    x = 3,060,964,750.14/51,347.40
  6. Step 6: Final answer
    x = 59,612.85

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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.