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Finding the Fourth Proportional to 64,603.80, 89,127.92 and 47,648.74

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Solution

The fourth proportional to 64,603.80, 89,127.92 and 47,648.74 is: 65,736.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,603.80 : 89,127.92 = 47,648.74 : x
  2. Step 2: Convert to fraction form
    64,603.80/89,127.92 = 47,648.74/x
  3. Step 3: Cross multiply
    64,603.80x = 89,127.92 × 47,648.74
  4. Step 4: Simplify right side
    64,603.80x = 4,246,833,086.82
  5. Step 5: Solve for x
    x = 4,246,833,086.82/64,603.80
  6. Step 6: Final answer
    x = 65,736.58

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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.