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Finding the Fourth Proportional to 42,907,615.40, 64,361,423.10 and 42,907,615.40

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Solution

The fourth proportional to 42,907,615.40, 64,361,423.10 and 42,907,615.40 is: 64,361,423.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,907,615.40 : 64,361,423.10 = 42,907,615.40 : x
  2. Step 2: Convert to fraction form
    42,907,615.40/64,361,423.10 = 42,907,615.40/x
  3. Step 3: Cross multiply
    42,907,615.40x = 64,361,423.10 × 42,907,615.40
  4. Step 4: Simplify right side
    42,907,615.40x = 2,761,595,188,971,475.50
  5. Step 5: Solve for x
    x = 2,761,595,188,971,475.50/42,907,615.40
  6. Step 6: Final answer
    x = 64,361,423.10

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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.