Home / 85,524,139.20-128,286,208.80-28,018,286.40

Finding the Fourth Proportional to 85,524,139.20, 128,286,208.80 and 28,018,286.40

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Solution

The fourth proportional to 85,524,139.20, 128,286,208.80 and 28,018,286.40 is: 42,027,429.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,524,139.20 : 128,286,208.80 = 28,018,286.40 : x
  2. Step 2: Convert to fraction form
    85,524,139.20/128,286,208.80 = 28,018,286.40/x
  3. Step 3: Cross multiply
    85,524,139.20x = 128,286,208.80 × 28,018,286.40
  4. Step 4: Simplify right side
    85,524,139.20x = 3,594,359,739,328,600
  5. Step 5: Solve for x
    x = 3,594,359,739,328,600/85,524,139.20
  6. Step 6: Final answer
    x = 42,027,429.60

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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.