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Finding the Fourth Proportional to 66,897.47, 100,362.92 and 47,214.47

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Solution

The fourth proportional to 66,897.47, 100,362.92 and 47,214.47 is: 70,833.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,897.47 : 100,362.92 = 47,214.47 : x
  2. Step 2: Convert to fraction form
    66,897.47/100,362.92 = 47,214.47/x
  3. Step 3: Cross multiply
    66,897.47x = 100,362.92 × 47,214.47
  4. Step 4: Simplify right side
    66,897.47x = 4,738,582,075.45
  5. Step 5: Solve for x
    x = 4,738,582,075.45/66,897.47
  6. Step 6: Final answer
    x = 70,833.50

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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.