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Finding the Fourth Proportional to 70,876.12, 97,809.12 and 39,045.04

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Solution

The fourth proportional to 70,876.12, 97,809.12 and 39,045.04 is: 53,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,876.12 : 97,809.12 = 39,045.04 : x
  2. Step 2: Convert to fraction form
    70,876.12/97,809.12 = 39,045.04/x
  3. Step 3: Cross multiply
    70,876.12x = 97,809.12 × 39,045.04
  4. Step 4: Simplify right side
    70,876.12x = 3,818,961,002.76
  5. Step 5: Solve for x
    x = 3,818,961,002.76/70,876.12
  6. Step 6: Final answer
    x = 53,882.20

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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.