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Finding the Fourth Proportional to 70,915.40, 97,862.74 and 39,084.32

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Solution

The fourth proportional to 70,915.40, 97,862.74 and 39,084.32 is: 53,936.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,915.40 : 97,862.74 = 39,084.32 : x
  2. Step 2: Convert to fraction form
    70,915.40/97,862.74 = 39,084.32/x
  3. Step 3: Cross multiply
    70,915.40x = 97,862.74 × 39,084.32
  4. Step 4: Simplify right side
    70,915.40x = 3,824,898,646.24
  5. Step 5: Solve for x
    x = 3,824,898,646.24/70,915.40
  6. Step 6: Final answer
    x = 53,936.08

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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.