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Finding the Fourth Proportional to 70,901.75, 97,843.80 and 39,070.42

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Solution

The fourth proportional to 70,901.75, 97,843.80 and 39,070.42 is: 53,916.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,901.75 : 97,843.80 = 39,070.42 : x
  2. Step 2: Convert to fraction form
    70,901.75/97,843.80 = 39,070.42/x
  3. Step 3: Cross multiply
    70,901.75x = 97,843.80 × 39,070.42
  4. Step 4: Simplify right side
    70,901.75x = 3,822,798,360.40
  5. Step 5: Solve for x
    x = 3,822,798,360.40/70,901.75
  6. Step 6: Final answer
    x = 53,916.84

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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.