Home / 85,503.52-128,281.20-60,591.84

Finding the Fourth Proportional to 85,503.52, 128,281.20 and 60,591.84

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Solution

The fourth proportional to 85,503.52, 128,281.20 and 60,591.84 is: 90,906.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,503.52 : 128,281.20 = 60,591.84 : x
  2. Step 2: Convert to fraction form
    85,503.52/128,281.20 = 60,591.84/x
  3. Step 3: Cross multiply
    85,503.52x = 128,281.20 × 60,591.84
  4. Step 4: Simplify right side
    85,503.52x = 7,772,793,945.41
  5. Step 5: Solve for x
    x = 7,772,793,945.41/85,503.52
  6. Step 6: Final answer
    x = 90,906.13

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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.