Home / 66,402,456.30-99,603,684.45-20,958,345.90

Finding the Fourth Proportional to 66,402,456.30, 99,603,684.45 and 20,958,345.90

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Solution

The fourth proportional to 66,402,456.30, 99,603,684.45 and 20,958,345.90 is: 31,437,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,402,456.30 : 99,603,684.45 = 20,958,345.90 : x
  2. Step 2: Convert to fraction form
    66,402,456.30/99,603,684.45 = 20,958,345.90/x
  3. Step 3: Cross multiply
    66,402,456.30x = 99,603,684.45 × 20,958,345.90
  4. Step 4: Simplify right side
    66,402,456.30x = 2,087,528,471,617,551.25
  5. Step 5: Solve for x
    x = 2,087,528,471,617,551.25/66,402,456.30
  6. Step 6: Final answer
    x = 31,437,518.85

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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.