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Finding the Fourth Proportional to 40,404.30, 60,606.45 and 15,780.30

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Solution

The fourth proportional to 40,404.30, 60,606.45 and 15,780.30 is: 23,670.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,404.30 : 60,606.45 = 15,780.30 : x
  2. Step 2: Convert to fraction form
    40,404.30/60,606.45 = 15,780.30/x
  3. Step 3: Cross multiply
    40,404.30x = 60,606.45 × 15,780.30
  4. Step 4: Simplify right side
    40,404.30x = 956,387,962.94
  5. Step 5: Solve for x
    x = 956,387,962.94/40,404.30
  6. Step 6: Final answer
    x = 23,670.45

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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.