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Finding the Fourth Proportional to 64,340.55, 88,768.67 and 38,837.21

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Solution

The fourth proportional to 64,340.55, 88,768.67 and 38,837.21 is: 53,582.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,340.55 : 88,768.67 = 38,837.21 : x
  2. Step 2: Convert to fraction form
    64,340.55/88,768.67 = 38,837.21/x
  3. Step 3: Cross multiply
    64,340.55x = 88,768.67 × 38,837.21
  4. Step 4: Simplify right side
    64,340.55x = 3,447,526,840.18
  5. Step 5: Solve for x
    x = 3,447,526,840.18/64,340.55
  6. Step 6: Final answer
    x = 53,582.49

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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.