Home / 8,142,430.60-12,213,645.90-5,308,078.60

Finding the Fourth Proportional to 8,142,430.60, 12,213,645.90 and 5,308,078.60

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Solution

The fourth proportional to 8,142,430.60, 12,213,645.90 and 5,308,078.60 is: 7,962,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142,430.60 : 12,213,645.90 = 5,308,078.60 : x
  2. Step 2: Convert to fraction form
    8,142,430.60/12,213,645.90 = 5,308,078.60/x
  3. Step 3: Cross multiply
    8,142,430.60x = 12,213,645.90 × 5,308,078.60
  4. Step 4: Simplify right side
    8,142,430.60x = 64,830,992,429,767.73
  5. Step 5: Solve for x
    x = 64,830,992,429,767.73/8,142,430.60
  6. Step 6: Final answer
    x = 7,962,117.90

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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.