Home / 56,918,820.69-78,547,998.99-30,813,338.49

Finding the Fourth Proportional to 56,918,820.69, 78,547,998.99 and 30,813,338.49

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Solution

The fourth proportional to 56,918,820.69, 78,547,998.99 and 30,813,338.49 is: 42,522,421.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,918,820.69 : 78,547,998.99 = 30,813,338.49 : x
  2. Step 2: Convert to fraction form
    56,918,820.69/78,547,998.99 = 30,813,338.49/x
  3. Step 3: Cross multiply
    56,918,820.69x = 78,547,998.99 × 30,813,338.49
  4. Step 4: Simplify right side
    56,918,820.69x = 2,420,326,080,591,048
  5. Step 5: Solve for x
    x = 2,420,326,080,591,048/56,918,820.69
  6. Step 6: Final answer
    x = 42,522,421.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.