Home / 42,986,700.80-64,464,998.40-12,686,540.80

Finding the Fourth Proportional to 42,986,700.80, 64,464,998.40 and 12,686,540.80

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Solution

The fourth proportional to 42,986,700.80, 64,464,998.40 and 12,686,540.80 is: 19,025,368.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,986,700.80 : 64,464,998.40 = 12,686,540.80 : x
  2. Step 2: Convert to fraction form
    42,986,700.80/64,464,998.40 = 12,686,540.80/x
  3. Step 3: Cross multiply
    42,986,700.80x = 64,464,998.40 × 12,686,540.80
  4. Step 4: Simplify right side
    42,986,700.80x = 817,837,832,373,534.75
  5. Step 5: Solve for x
    x = 817,837,832,373,534.75/42,986,700.80
  6. Step 6: Final answer
    x = 19,025,368.71

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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.