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Finding the Fourth Proportional to 71,006.84, 97,987.80 and 39,175.72

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Solution

The fourth proportional to 71,006.84, 97,987.80 and 39,175.72 is: 54,061.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,006.84 : 97,987.80 = 39,175.72 : x
  2. Step 2: Convert to fraction form
    71,006.84/97,987.80 = 39,175.72/x
  3. Step 3: Cross multiply
    71,006.84x = 97,987.80 × 39,175.72
  4. Step 4: Simplify right side
    71,006.84x = 3,838,742,616.22
  5. Step 5: Solve for x
    x = 3,838,742,616.22/71,006.84
  6. Step 6: Final answer
    x = 54,061.59

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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.