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Finding the Fourth Proportional to 64,239.03, 88,680.93 and 42,764.58

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Solution

The fourth proportional to 64,239.03, 88,680.93 and 42,764.58 is: 59,035.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,239.03 : 88,680.93 = 42,764.58 : x
  2. Step 2: Convert to fraction form
    64,239.03/88,680.93 = 42,764.58/x
  3. Step 3: Cross multiply
    64,239.03x = 88,680.93 × 42,764.58
  4. Step 4: Simplify right side
    64,239.03x = 3,792,402,725.46
  5. Step 5: Solve for x
    x = 3,792,402,725.46/64,239.03
  6. Step 6: Final answer
    x = 59,035.80

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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.