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Finding the Fourth Proportional to 70,531.56, 97,339.88 and 38,706.68

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Solution

The fourth proportional to 70,531.56, 97,339.88 and 38,706.68 is: 53,418.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,531.56 : 97,339.88 = 38,706.68 : x
  2. Step 2: Convert to fraction form
    70,531.56/97,339.88 = 38,706.68/x
  3. Step 3: Cross multiply
    70,531.56x = 97,339.88 × 38,706.68
  4. Step 4: Simplify right side
    70,531.56x = 3,767,703,586.40
  5. Step 5: Solve for x
    x = 3,767,703,586.40/70,531.56
  6. Step 6: Final answer
    x = 53,418.69

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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.