Home / 30,118,510.80-45,177,766.20-9,921,128.40

Finding the Fourth Proportional to 30,118,510.80, 45,177,766.20 and 9,921,128.40

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Solution

The fourth proportional to 30,118,510.80, 45,177,766.20 and 9,921,128.40 is: 14,881,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,118,510.80 : 45,177,766.20 = 9,921,128.40 : x
  2. Step 2: Convert to fraction form
    30,118,510.80/45,177,766.20 = 9,921,128.40/x
  3. Step 3: Cross multiply
    30,118,510.80x = 45,177,766.20 × 9,921,128.40
  4. Step 4: Simplify right side
    30,118,510.80x = 448,214,419,295,380.12
  5. Step 5: Solve for x
    x = 448,214,419,295,380.12/30,118,510.80
  6. Step 6: Final answer
    x = 14,881,692.60

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1.5x scale

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.