Home / 76,791,313.60-115,186,970.40-56,383,979.20

Finding the Fourth Proportional to 76,791,313.60, 115,186,970.40 and 56,383,979.20

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Solution

The fourth proportional to 76,791,313.60, 115,186,970.40 and 56,383,979.20 is: 84,575,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,791,313.60 : 115,186,970.40 = 56,383,979.20 : x
  2. Step 2: Convert to fraction form
    76,791,313.60/115,186,970.40 = 56,383,979.20/x
  3. Step 3: Cross multiply
    76,791,313.60x = 115,186,970.40 × 56,383,979.20
  4. Step 4: Simplify right side
    76,791,313.60x = 6,494,699,743,144,616
  5. Step 5: Solve for x
    x = 6,494,699,743,144,616/76,791,313.60
  6. Step 6: Final answer
    x = 84,575,968.80

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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.