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Finding the Fourth Proportional to 70,885.20, 106,327.88 and 66,554.92

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Solution

The fourth proportional to 70,885.20, 106,327.88 and 66,554.92 is: 99,832.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,885.20 : 106,327.88 = 66,554.92 : x
  2. Step 2: Convert to fraction form
    70,885.20/106,327.88 = 66,554.92/x
  3. Step 3: Cross multiply
    70,885.20x = 106,327.88 × 66,554.92
  4. Step 4: Simplify right side
    70,885.20x = 7,076,643,547.17
  5. Step 5: Solve for x
    x = 7,076,643,547.17/70,885.20
  6. Step 6: Final answer
    x = 99,832.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.