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Finding the Fourth Proportional to 107,042.90, 147,689.04 and 61,717.32

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Solution

The fourth proportional to 107,042.90, 147,689.04 and 61,717.32 is: 85,152.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,042.90 : 147,689.04 = 61,717.32 : x
  2. Step 2: Convert to fraction form
    107,042.90/147,689.04 = 61,717.32/x
  3. Step 3: Cross multiply
    107,042.90x = 147,689.04 × 61,717.32
  4. Step 4: Simplify right side
    107,042.90x = 9,114,971,742.17
  5. Step 5: Solve for x
    x = 9,114,971,742.17/107,042.90
  6. Step 6: Final answer
    x = 85,152.51

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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.