Home / 7,872,140.80-11,808,211.20-6,472,460.80

Finding the Fourth Proportional to 7,872,140.80, 11,808,211.20 and 6,472,460.80

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Solution

The fourth proportional to 7,872,140.80, 11,808,211.20 and 6,472,460.80 is: 9,708,691.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872,140.80 : 11,808,211.20 = 6,472,460.80 : x
  2. Step 2: Convert to fraction form
    7,872,140.80/11,808,211.20 = 6,472,460.80/x
  3. Step 3: Cross multiply
    7,872,140.80x = 11,808,211.20 × 6,472,460.80
  4. Step 4: Simplify right side
    7,872,140.80x = 76,428,184,110,120.95
  5. Step 5: Solve for x
    x = 76,428,184,110,120.95/7,872,140.80
  6. Step 6: Final answer
    x = 9,708,691.20

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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.