Home / 42,911.76-64,438.86-28,961.52

Finding the Fourth Proportional to 42,911.76, 64,438.86 and 28,961.52

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Solution

The fourth proportional to 42,911.76, 64,438.86 and 28,961.52 is: 43,490.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,911.76 : 64,438.86 = 28,961.52 : x
  2. Step 2: Convert to fraction form
    42,911.76/64,438.86 = 28,961.52/x
  3. Step 3: Cross multiply
    42,911.76x = 64,438.86 × 28,961.52
  4. Step 4: Simplify right side
    42,911.76x = 1,866,247,332.67
  5. Step 5: Solve for x
    x = 1,866,247,332.67/42,911.76
  6. Step 6: Final answer
    x = 43,490.35

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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.