Home / 65,643,422.40-98,465,133.60-20,219,140.80

Finding the Fourth Proportional to 65,643,422.40, 98,465,133.60 and 20,219,140.80

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Solution

The fourth proportional to 65,643,422.40, 98,465,133.60 and 20,219,140.80 is: 30,328,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,643,422.40 : 98,465,133.60 = 20,219,140.80 : x
  2. Step 2: Convert to fraction form
    65,643,422.40/98,465,133.60 = 20,219,140.80/x
  3. Step 3: Cross multiply
    65,643,422.40x = 98,465,133.60 × 20,219,140.80
  4. Step 4: Simplify right side
    65,643,422.40x = 1,990,880,400,149,210.75
  5. Step 5: Solve for x
    x = 1,990,880,400,149,210.75/65,643,422.40
  6. Step 6: Final answer
    x = 30,328,711.20

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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.