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Finding the Fourth Proportional to 70,514.00, 105,671.55 and 38,938.28

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Solution

The fourth proportional to 70,514.00, 105,671.55 and 38,938.28 is: 58,352.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,514.00 : 105,671.55 = 38,938.28 : x
  2. Step 2: Convert to fraction form
    70,514.00/105,671.55 = 38,938.28/x
  3. Step 3: Cross multiply
    70,514.00x = 105,671.55 × 38,938.28
  4. Step 4: Simplify right side
    70,514.00x = 4,114,668,316.80
  5. Step 5: Solve for x
    x = 4,114,668,316.80/70,514.00
  6. Step 6: Final answer
    x = 58,352.50

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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.