Home / 55,207,309.81-76,182,978.61-30,427,421.57

Finding the Fourth Proportional to 55,207,309.81, 76,182,978.61 and 30,427,421.57

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Solution

The fourth proportional to 55,207,309.81, 76,182,978.61 and 30,427,421.57 is: 41,988,128.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,207,309.81 : 76,182,978.61 = 30,427,421.57 : x
  2. Step 2: Convert to fraction form
    55,207,309.81/76,182,978.61 = 30,427,421.57/x
  3. Step 3: Cross multiply
    55,207,309.81x = 76,182,978.61 × 30,427,421.57
  4. Step 4: Simplify right side
    55,207,309.81x = 2,318,051,606,624,762.50
  5. Step 5: Solve for x
    x = 2,318,051,606,624,762.50/55,207,309.81
  6. Step 6: Final answer
    x = 41,988,128.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.