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Finding the Fourth Proportional to 66,657,828.96, 99,895,939.20 and 40,759,200

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Solution

The fourth proportional to 66,657,828.96, 99,895,939.20 and 40,759,200 is: 61,083,276.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,657,828.96 : 99,895,939.20 = 40,759,200 : x
  2. Step 2: Convert to fraction form
    66,657,828.96/99,895,939.20 = 40,759,200/x
  3. Step 3: Cross multiply
    66,657,828.96x = 99,895,939.20 × 40,759,200
  4. Step 4: Simplify right side
    66,657,828.96x = 4,071,678,565,040,640
  5. Step 5: Solve for x
    x = 4,071,678,565,040,640/66,657,828.96
  6. Step 6: Final answer
    x = 61,083,276.02

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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.