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Finding the Fourth Proportional to 64,765.88, 89,415.60 and 46,842.20

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Solution

The fourth proportional to 64,765.88, 89,415.60 and 46,842.20 is: 64,670.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,765.88 : 89,415.60 = 46,842.20 : x
  2. Step 2: Convert to fraction form
    64,765.88/89,415.60 = 46,842.20/x
  3. Step 3: Cross multiply
    64,765.88x = 89,415.60 × 46,842.20
  4. Step 4: Simplify right side
    64,765.88x = 4,188,423,418.32
  5. Step 5: Solve for x
    x = 4,188,423,418.32/64,765.88
  6. Step 6: Final answer
    x = 64,670.22

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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.