Home / 81,657,009.10-122,485,513.65-40,842,340.30

Finding the Fourth Proportional to 81,657,009.10, 122,485,513.65 and 40,842,340.30

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Solution

The fourth proportional to 81,657,009.10, 122,485,513.65 and 40,842,340.30 is: 61,263,510.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657,009.10 : 122,485,513.65 = 40,842,340.30 : x
  2. Step 2: Convert to fraction form
    81,657,009.10/122,485,513.65 = 40,842,340.30/x
  3. Step 3: Cross multiply
    81,657,009.10x = 122,485,513.65 × 40,842,340.30
  4. Step 4: Simplify right side
    81,657,009.10x = 5,002,595,030,313,595
  5. Step 5: Solve for x
    x = 5,002,595,030,313,595/81,657,009.10
  6. Step 6: Final answer
    x = 61,263,510.45

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Similar ratio
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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.