Home / 86,823,975.80-130,123,989.30-66,528,615.80

Finding the Fourth Proportional to 86,823,975.80, 130,123,989.30 and 66,528,615.80

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Solution

The fourth proportional to 86,823,975.80, 130,123,989.30 and 66,528,615.80 is: 99,707,123.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,823,975.80 : 130,123,989.30 = 66,528,615.80 : x
  2. Step 2: Convert to fraction form
    86,823,975.80/130,123,989.30 = 66,528,615.80/x
  3. Step 3: Cross multiply
    86,823,975.80x = 130,123,989.30 × 66,528,615.80
  4. Step 4: Simplify right side
    86,823,975.80x = 8,656,968,890,503,010
  5. Step 5: Solve for x
    x = 8,656,968,890,503,010/86,823,975.80
  6. Step 6: Final answer
    x = 99,707,123.65

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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.