Home / 76,806,548.12-115,209,938.80-31,368,342.62

Finding the Fourth Proportional to 76,806,548.12, 115,209,938.80 and 31,368,342.62

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Solution

The fourth proportional to 76,806,548.12, 115,209,938.80 and 31,368,342.62 is: 47,052,561.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,806,548.12 : 115,209,938.80 = 31,368,342.62 : x
  2. Step 2: Convert to fraction form
    76,806,548.12/115,209,938.80 = 31,368,342.62/x
  3. Step 3: Cross multiply
    76,806,548.12x = 115,209,938.80 × 31,368,342.62
  4. Step 4: Simplify right side
    76,806,548.12x = 3,613,944,833,507,631.50
  5. Step 5: Solve for x
    x = 3,613,944,833,507,631.50/76,806,548.12
  6. Step 6: Final answer
    x = 47,052,561.56

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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.