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Finding the Fourth Proportional to 70,948.88, 97,910.12 and 39,118.91

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Solution

The fourth proportional to 70,948.88, 97,910.12 and 39,118.91 is: 53,984.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,948.88 : 97,910.12 = 39,118.91 : x
  2. Step 2: Convert to fraction form
    70,948.88/97,910.12 = 39,118.91/x
  3. Step 3: Cross multiply
    70,948.88x = 97,910.12 × 39,118.91
  4. Step 4: Simplify right side
    70,948.88x = 3,830,137,368.25
  5. Step 5: Solve for x
    x = 3,830,137,368.25/70,948.88
  6. Step 6: Final answer
    x = 53,984.46

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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.