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Finding the Fourth Proportional to 45,281.80, 67,922.70 and 42,001.30

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Solution

The fourth proportional to 45,281.80, 67,922.70 and 42,001.30 is: 63,001.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,281.80 : 67,922.70 = 42,001.30 : x
  2. Step 2: Convert to fraction form
    45,281.80/67,922.70 = 42,001.30/x
  3. Step 3: Cross multiply
    45,281.80x = 67,922.70 × 42,001.30
  4. Step 4: Simplify right side
    45,281.80x = 2,852,841,699.51
  5. Step 5: Solve for x
    x = 2,852,841,699.51/45,281.80
  6. Step 6: Final answer
    x = 63,001.95

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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.