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Finding the Fourth Proportional to 66,585,602, 99,878,403 and 18,716,546

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Solution

The fourth proportional to 66,585,602, 99,878,403 and 18,716,546 is: 28,074,819

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,585,602 : 99,878,403 = 18,716,546 : x
  2. Step 2: Convert to fraction form
    66,585,602/99,878,403 = 18,716,546/x
  3. Step 3: Cross multiply
    66,585,602x = 99,878,403 × 18,716,546
  4. Step 4: Simplify right side
    66,585,602x = 1,869,378,724,156,038
  5. Step 5: Solve for x
    x = 1,869,378,724,156,038/66,585,602
  6. Step 6: Final answer
    x = 28,074,819

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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.