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Finding the Fourth Proportional to 70,705.71, 97,574.12 and 38,876.62

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Solution

The fourth proportional to 70,705.71, 97,574.12 and 38,876.62 is: 53,649.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,705.71 : 97,574.12 = 38,876.62 : x
  2. Step 2: Convert to fraction form
    70,705.71/97,574.12 = 38,876.62/x
  3. Step 3: Cross multiply
    70,705.71x = 97,574.12 × 38,876.62
  4. Step 4: Simplify right side
    70,705.71x = 3,793,351,985.07
  5. Step 5: Solve for x
    x = 3,793,351,985.07/70,705.71
  6. Step 6: Final answer
    x = 53,649.87

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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.