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Finding the Fourth Proportional to 103,358.71, 155,010.30 and 28,461.02

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Solution

The fourth proportional to 103,358.71, 155,010.30 and 28,461.02 is: 42,683.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,358.71 : 155,010.30 = 28,461.02 : x
  2. Step 2: Convert to fraction form
    103,358.71/155,010.30 = 28,461.02/x
  3. Step 3: Cross multiply
    103,358.71x = 155,010.30 × 28,461.02
  4. Step 4: Simplify right side
    103,358.71x = 4,411,751,054.74
  5. Step 5: Solve for x
    x = 4,411,751,054.74/103,358.71
  6. Step 6: Final answer
    x = 42,683.88

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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.