Home / 57,215,347.25-78,956,630.34-31,109,870.45

Finding the Fourth Proportional to 57,215,347.25, 78,956,630.34 and 31,109,870.45

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Solution

The fourth proportional to 57,215,347.25, 78,956,630.34 and 31,109,870.45 is: 42,931,322.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,215,347.25 : 78,956,630.34 = 31,109,870.45 : x
  2. Step 2: Convert to fraction form
    57,215,347.25/78,956,630.34 = 31,109,870.45/x
  3. Step 3: Cross multiply
    57,215,347.25x = 78,956,630.34 × 31,109,870.45
  4. Step 4: Simplify right side
    57,215,347.25x = 2,456,330,540,651,156.50
  5. Step 5: Solve for x
    x = 2,456,330,540,651,156.50/57,215,347.25
  6. Step 6: Final answer
    x = 42,931,322.78

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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.