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Finding the Fourth Proportional to 70,956.59, 97,915.05 and 39,124.80

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Solution

The fourth proportional to 70,956.59, 97,915.05 and 39,124.80 is: 53,989.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,956.59 : 97,915.05 = 39,124.80 : x
  2. Step 2: Convert to fraction form
    70,956.59/97,915.05 = 39,124.80/x
  3. Step 3: Cross multiply
    70,956.59x = 97,915.05 × 39,124.80
  4. Step 4: Simplify right side
    70,956.59x = 3,830,906,748.24
  5. Step 5: Solve for x
    x = 3,830,906,748.24/70,956.59
  6. Step 6: Final answer
    x = 53,989.45

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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.