Home / 85,248,002.20-127,872,003.30-77,019,957.40

Finding the Fourth Proportional to 85,248,002.20, 127,872,003.30 and 77,019,957.40

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Solution

The fourth proportional to 85,248,002.20, 127,872,003.30 and 77,019,957.40 is: 115,529,936.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,248,002.20 : 127,872,003.30 = 77,019,957.40 : x
  2. Step 2: Convert to fraction form
    85,248,002.20/127,872,003.30 = 77,019,957.40/x
  3. Step 3: Cross multiply
    85,248,002.20x = 127,872,003.30 × 77,019,957.40
  4. Step 4: Simplify right side
    85,248,002.20x = 9,848,696,246,818,660
  5. Step 5: Solve for x
    x = 9,848,696,246,818,660/85,248,002.20
  6. Step 6: Final answer
    x = 115,529,936.10

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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.