Home / 78,225,643.20-117,380,455.20-32,792,030.40

Finding the Fourth Proportional to 78,225,643.20, 117,380,455.20 and 32,792,030.40

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Solution

The fourth proportional to 78,225,643.20, 117,380,455.20 and 32,792,030.40 is: 49,205,647.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,225,643.20 : 117,380,455.20 = 32,792,030.40 : x
  2. Step 2: Convert to fraction form
    78,225,643.20/117,380,455.20 = 32,792,030.40/x
  3. Step 3: Cross multiply
    78,225,643.20x = 117,380,455.20 × 32,792,030.40
  4. Step 4: Simplify right side
    78,225,643.20x = 3,849,143,455,284,238
  5. Step 5: Solve for x
    x = 3,849,143,455,284,238/78,225,643.20
  6. Step 6: Final answer
    x = 49,205,647.89

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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.