Home / 42,986,701.80-64,464,999.90-12,686,541.80

Finding the Fourth Proportional to 42,986,701.80, 64,464,999.90 and 12,686,541.80

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Solution

The fourth proportional to 42,986,701.80, 64,464,999.90 and 12,686,541.80 is: 19,025,370.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,986,701.80 : 64,464,999.90 = 12,686,541.80 : x
  2. Step 2: Convert to fraction form
    42,986,701.80/64,464,999.90 = 12,686,541.80/x
  3. Step 3: Cross multiply
    42,986,701.80x = 64,464,999.90 × 12,686,541.80
  4. Step 4: Simplify right side
    42,986,701.80x = 817,837,915,868,345.88
  5. Step 5: Solve for x
    x = 817,837,915,868,345.88/42,986,701.80
  6. Step 6: Final answer
    x = 19,025,370.21

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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.