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Finding the Fourth Proportional to 64,415.34, 88,894.08 and 38,918.16

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Solution

The fourth proportional to 64,415.34, 88,894.08 and 38,918.16 is: 53,707.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,415.34 : 88,894.08 = 38,918.16 : x
  2. Step 2: Convert to fraction form
    64,415.34/88,894.08 = 38,918.16/x
  3. Step 3: Cross multiply
    64,415.34x = 88,894.08 × 38,918.16
  4. Step 4: Simplify right side
    64,415.34x = 3,459,594,028.49
  5. Step 5: Solve for x
    x = 3,459,594,028.49/64,415.34
  6. Step 6: Final answer
    x = 53,707.61

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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.