Home / 81,656,565.20-122,484,847.80-30,528,004.40

Finding the Fourth Proportional to 81,656,565.20, 122,484,847.80 and 30,528,004.40

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Solution

The fourth proportional to 81,656,565.20, 122,484,847.80 and 30,528,004.40 is: 45,792,006.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,656,565.20 : 122,484,847.80 = 30,528,004.40 : x
  2. Step 2: Convert to fraction form
    81,656,565.20/122,484,847.80 = 30,528,004.40/x
  3. Step 3: Cross multiply
    81,656,565.20x = 122,484,847.80 × 30,528,004.40
  4. Step 4: Simplify right side
    81,656,565.20x = 3,739,217,972,571,730
  5. Step 5: Solve for x
    x = 3,739,217,972,571,730/81,656,565.20
  6. Step 6: Final answer
    x = 45,792,006.60

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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.