Home / 60,419.20-90,645.12-42,999.60

Finding the Fourth Proportional to 60,419.20, 90,645.12 and 42,999.60

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Solution

The fourth proportional to 60,419.20, 90,645.12 and 42,999.60 is: 64,511.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,419.20 : 90,645.12 = 42,999.60 : x
  2. Step 2: Convert to fraction form
    60,419.20/90,645.12 = 42,999.60/x
  3. Step 3: Cross multiply
    60,419.20x = 90,645.12 × 42,999.60
  4. Step 4: Simplify right side
    60,419.20x = 3,897,703,901.95
  5. Step 5: Solve for x
    x = 3,897,703,901.95/60,419.20
  6. Step 6: Final answer
    x = 64,511.01

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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.