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Finding the Fourth Proportional to 66,590,414.40, 99,892,274.40 and 18,069,038.40

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Solution

The fourth proportional to 66,590,414.40, 99,892,274.40 and 18,069,038.40 is: 27,105,362.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,590,414.40 : 99,892,274.40 = 18,069,038.40 : x
  2. Step 2: Convert to fraction form
    66,590,414.40/99,892,274.40 = 18,069,038.40/x
  3. Step 3: Cross multiply
    66,590,414.40x = 99,892,274.40 × 18,069,038.40
  4. Step 4: Simplify right side
    66,590,414.40x = 1,804,957,341,996,937
  5. Step 5: Solve for x
    x = 1,804,957,341,996,937/66,590,414.40
  6. Step 6: Final answer
    x = 27,105,362.81

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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.