Home / 85,549,670.40-128,355,998.40-28,043,817.60

Finding the Fourth Proportional to 85,549,670.40, 128,355,998.40 and 28,043,817.60

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Solution

The fourth proportional to 85,549,670.40, 128,355,998.40 and 28,043,817.60 is: 42,076,049.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,549,670.40 : 128,355,998.40 = 28,043,817.60 : x
  2. Step 2: Convert to fraction form
    85,549,670.40/128,355,998.40 = 28,043,817.60/x
  3. Step 3: Cross multiply
    85,549,670.40x = 128,355,998.40 × 28,043,817.60
  4. Step 4: Simplify right side
    85,549,670.40x = 3,599,592,206,995,492
  5. Step 5: Solve for x
    x = 3,599,592,206,995,492/85,549,670.40
  6. Step 6: Final answer
    x = 42,076,049.97

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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.