Home / 7,881,681.20-11,822,521.80-5,729,345.15

Finding the Fourth Proportional to 7,881,681.20, 11,822,521.80 and 5,729,345.15

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Solution

The fourth proportional to 7,881,681.20, 11,822,521.80 and 5,729,345.15 is: 8,594,017.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881,681.20 : 11,822,521.80 = 5,729,345.15 : x
  2. Step 2: Convert to fraction form
    7,881,681.20/11,822,521.80 = 5,729,345.15/x
  3. Step 3: Cross multiply
    7,881,681.20x = 11,822,521.80 × 5,729,345.15
  4. Step 4: Simplify right side
    7,881,681.20x = 67,735,307,935,599.28
  5. Step 5: Solve for x
    x = 67,735,307,935,599.28/7,881,681.20
  6. Step 6: Final answer
    x = 8,594,017.73

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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.