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Finding the Fourth Proportional to 74,706.76, 103,102.50 and 42,881.32

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Solution

The fourth proportional to 74,706.76, 103,102.50 and 42,881.32 is: 59,180.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,706.76 : 103,102.50 = 42,881.32 : x
  2. Step 2: Convert to fraction form
    74,706.76/103,102.50 = 42,881.32/x
  3. Step 3: Cross multiply
    74,706.76x = 103,102.50 × 42,881.32
  4. Step 4: Simplify right side
    74,706.76x = 4,421,171,295.30
  5. Step 5: Solve for x
    x = 4,421,171,295.30/74,706.76
  6. Step 6: Final answer
    x = 59,180.34

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Double scale
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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.