Home / 78,024,970.80-117,037,456.20-73,242,001.80

Finding the Fourth Proportional to 78,024,970.80, 117,037,456.20 and 73,242,001.80

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Solution

The fourth proportional to 78,024,970.80, 117,037,456.20 and 73,242,001.80 is: 109,863,002.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,024,970.80 : 117,037,456.20 = 73,242,001.80 : x
  2. Step 2: Convert to fraction form
    78,024,970.80/117,037,456.20 = 73,242,001.80/x
  3. Step 3: Cross multiply
    78,024,970.80x = 117,037,456.20 × 73,242,001.80
  4. Step 4: Simplify right side
    78,024,970.80x = 8,572,057,577,667,821
  5. Step 5: Solve for x
    x = 8,572,057,577,667,821/78,024,970.80
  6. Step 6: Final answer
    x = 109,863,002.70

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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.