Home / 85,539,992.40-128,308,822.20-28,034,139.60

Finding the Fourth Proportional to 85,539,992.40, 128,308,822.20 and 28,034,139.60

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Solution

The fourth proportional to 85,539,992.40, 128,308,822.20 and 28,034,139.60 is: 42,050,827.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,539,992.40 : 128,308,822.20 = 28,034,139.60 : x
  2. Step 2: Convert to fraction form
    85,539,992.40/128,308,822.20 = 28,034,139.60/x
  3. Step 3: Cross multiply
    85,539,992.40x = 128,308,822.20 × 28,034,139.60
  4. Step 4: Simplify right side
    85,539,992.40x = 3,597,027,433,466,379.50
  5. Step 5: Solve for x
    x = 3,597,027,433,466,379.50/85,539,992.40
  6. Step 6: Final answer
    x = 42,050,827.13

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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.