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Finding the Fourth Proportional to 73,969.04, 101,820.84 and 64,521.20

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Solution

The fourth proportional to 73,969.04, 101,820.84 and 64,521.20 is: 88,815.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,969.04 : 101,820.84 = 64,521.20 : x
  2. Step 2: Convert to fraction form
    73,969.04/101,820.84 = 64,521.20/x
  3. Step 3: Cross multiply
    73,969.04x = 101,820.84 × 64,521.20
  4. Step 4: Simplify right side
    73,969.04x = 6,569,602,781.81
  5. Step 5: Solve for x
    x = 6,569,602,781.81/73,969.04
  6. Step 6: Final answer
    x = 88,815.57

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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.