Home / 42,921.90-64,200.60-38,511.45

Finding the Fourth Proportional to 42,921.90, 64,200.60 and 38,511.45

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Solution

The fourth proportional to 42,921.90, 64,200.60 and 38,511.45 is: 57,603.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,921.90 : 64,200.60 = 38,511.45 : x
  2. Step 2: Convert to fraction form
    42,921.90/64,200.60 = 38,511.45/x
  3. Step 3: Cross multiply
    42,921.90x = 64,200.60 × 38,511.45
  4. Step 4: Simplify right side
    42,921.90x = 2,472,458,196.87
  5. Step 5: Solve for x
    x = 2,472,458,196.87/42,921.90
  6. Step 6: Final answer
    x = 57,603.65

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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.