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Finding the Fourth Proportional to 40,358,697.60, 60,538,046.40 and 28,029,266.40

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Solution

The fourth proportional to 40,358,697.60, 60,538,046.40 and 28,029,266.40 is: 42,043,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,358,697.60 : 60,538,046.40 = 28,029,266.40 : x
  2. Step 2: Convert to fraction form
    40,358,697.60/60,538,046.40 = 28,029,266.40/x
  3. Step 3: Cross multiply
    40,358,697.60x = 60,538,046.40 × 28,029,266.40
  4. Step 4: Simplify right side
    40,358,697.60x = 1,696,837,029,881,160.75
  5. Step 5: Solve for x
    x = 1,696,837,029,881,160.75/40,358,697.60
  6. Step 6: Final answer
    x = 42,043,899.60

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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.