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Finding the Fourth Proportional to 45,897.60, 68,336.76 and 45,638.40

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Solution

The fourth proportional to 45,897.60, 68,336.76 and 45,638.40 is: 67,950.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,897.60 : 68,336.76 = 45,638.40 : x
  2. Step 2: Convert to fraction form
    45,897.60/68,336.76 = 45,638.40/x
  3. Step 3: Cross multiply
    45,897.60x = 68,336.76 × 45,638.40
  4. Step 4: Simplify right side
    45,897.60x = 3,118,780,387.58
  5. Step 5: Solve for x
    x = 3,118,780,387.58/45,897.60
  6. Step 6: Final answer
    x = 67,950.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.