Home / 72,300,020.80-108,415,816.80-42,017,166.40

Finding the Fourth Proportional to 72,300,020.80, 108,415,816.80 and 42,017,166.40

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Solution

The fourth proportional to 72,300,020.80, 108,415,816.80 and 42,017,166.40 is: 63,005,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,300,020.80 : 108,415,816.80 = 42,017,166.40 : x
  2. Step 2: Convert to fraction form
    72,300,020.80/108,415,816.80 = 42,017,166.40/x
  3. Step 3: Cross multiply
    72,300,020.80x = 108,415,816.80 × 42,017,166.40
  4. Step 4: Simplify right side
    72,300,020.80x = 4,555,325,414,877,515
  5. Step 5: Solve for x
    x = 4,555,325,414,877,515/72,300,020.80
  6. Step 6: Final answer
    x = 63,005,865.90

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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.