Home / 10,081,681.60-15,120,772.80-3,688,643.20

Finding the Fourth Proportional to 10,081,681.60, 15,120,772.80 and 3,688,643.20

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Solution

The fourth proportional to 10,081,681.60, 15,120,772.80 and 3,688,643.20 is: 5,532,324.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081,681.60 : 15,120,772.80 = 3,688,643.20 : x
  2. Step 2: Convert to fraction form
    10,081,681.60/15,120,772.80 = 3,688,643.20/x
  3. Step 3: Cross multiply
    10,081,681.60x = 15,120,772.80 × 3,688,643.20
  4. Step 4: Simplify right side
    10,081,681.60x = 55,775,135,767,464.97
  5. Step 5: Solve for x
    x = 55,775,135,767,464.97/10,081,681.60
  6. Step 6: Final answer
    x = 5,532,324.66

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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.