Home / 42,921.60-59,205.64-28,385.76

Finding the Fourth Proportional to 42,921.60, 59,205.64 and 28,385.76

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Solution

The fourth proportional to 42,921.60, 59,205.64 and 28,385.76 is: 39,155.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,921.60 : 59,205.64 = 28,385.76 : x
  2. Step 2: Convert to fraction form
    42,921.60/59,205.64 = 28,385.76/x
  3. Step 3: Cross multiply
    42,921.60x = 59,205.64 × 28,385.76
  4. Step 4: Simplify right side
    42,921.60x = 1,680,597,087.69
  5. Step 5: Solve for x
    x = 1,680,597,087.69/42,921.60
  6. Step 6: Final answer
    x = 39,155.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.