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Finding the Fourth Proportional to 66,585,604, 99,878,406 and 18,716,548

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Solution

The fourth proportional to 66,585,604, 99,878,406 and 18,716,548 is: 28,074,822

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,585,604 : 99,878,406 = 18,716,548 : x
  2. Step 2: Convert to fraction form
    66,585,604/99,878,406 = 18,716,548/x
  3. Step 3: Cross multiply
    66,585,604x = 99,878,406 × 18,716,548
  4. Step 4: Simplify right side
    66,585,604x = 1,869,378,980,062,488
  5. Step 5: Solve for x
    x = 1,869,378,980,062,488/66,585,604
  6. Step 6: Final answer
    x = 28,074,822

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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.